diff --git a/src/main/java/com/xujie/modules/inspection/controller/SrmFeeController.java b/src/main/java/com/xujie/modules/inspection/controller/SrmFeeController.java
new file mode 100644
index 0000000..6906dca
--- /dev/null
+++ b/src/main/java/com/xujie/modules/inspection/controller/SrmFeeController.java
@@ -0,0 +1,197 @@
+package com.xujie.modules.inspection.controller;
+
+import com.xujie.common.utils.PageUtils;
+import com.xujie.common.utils.R;
+import com.xujie.modules.inspection.data.AddRequestFeeVO;
+import com.xujie.modules.inspection.entity.SrmFeeDetailEntity;
+import com.xujie.modules.inspection.entity.SrmFeeHeaderEntity;
+import com.xujie.modules.inspection.entity.SrmInspectRequestFeeEntity;
+import com.xujie.modules.inspection.service.SrmFeeService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 费用管理Controller
+ */
+@RestController
+@RequestMapping("/inspection/fee")
+public class SrmFeeController {
+
+    @Autowired
+    private SrmFeeService srmFeeService;
+
+    /**
+     * 分页查询费用主记录列表
+     */
+    @PostMapping("/searchFeeHeaderList")
+    @ResponseBody
+    public R searchFeeHeaderList(@RequestBody SrmFeeHeaderEntity data) {
+        PageUtils page = srmFeeService.searchFeeHeaderList(data);
+        return R.ok().put("page", page);
+    }
+
+    /**
+     * 根据费用单号查询主记录
+     */
+    @PostMapping("/getFeeHeaderByNo")
+    @ResponseBody
+    public R getFeeHeaderByNo(@RequestBody SrmFeeHeaderEntity header) {
+        SrmFeeHeaderEntity result =
+                srmFeeService.getFeeHeaderByNo(
+                        header.getSite(),
+                        header.getFeeNo()
+                );
+
+        return R.ok().put("header", result);
+    }
+
+    /**
+     * 创建费用主记录
+     */
+    @PostMapping("/createFeeHeader")
+    @ResponseBody
+    public R createFeeHeader(@RequestBody SrmFeeHeaderEntity header) {
+        srmFeeService.createFeeHeader(header);
+        return R.ok();
+    }
+
+    /**
+     * 更新费用主记录
+     */
+    @PostMapping("/updateFeeHeader")
+    @ResponseBody
+    public R updateFeeHeader(@RequestBody SrmFeeHeaderEntity header) {
+
+        srmFeeService.updateFeeHeader(header);
+
+        return R.ok();
+    }
+
+    /**
+     * 删除费用记录
+     */
+    @PostMapping("/deleteFeeRecord")
+    @ResponseBody
+    public R deleteFeeRecord(@RequestBody SrmFeeHeaderEntity header) {
+        srmFeeService.deleteFeeRecord(
+                header.getSite(),
+                header.getFeeNo()
+        );
+
+        return R.ok();
+    }
+
+    /**
+     * 查询费用明细列表
+     */
+    @PostMapping("/getFeeDetailList")
+    @ResponseBody
+    public R getFeeDetailList(@RequestBody SrmFeeDetailEntity detail) {
+        List<SrmFeeDetailEntity> details =
+                srmFeeService.getFeeDetailList(
+                        detail.getSite(),
+                        detail.getFeeNo()
+                );
+
+        return R.ok().put("details", details);
+    }
+
+    /**
+     * 根据表单查询费用明细
+    */
+    @PostMapping("/getFeeDetailByRequestNo")
+    @ResponseBody
+    public R getFeeDetailByRequestNo(@RequestBody SrmFeeDetailEntity detail) {
+        List<SrmFeeDetailEntity> details = srmFeeService.getFeeDetailByRequestNo(
+                detail.getSite(),
+                detail.getFeeNo(),
+                detail.getRequestNo()
+        );
+        return R.ok().put("details", details);
+    }
+
+
+    /**
+     * 添加费用明细
+     */
+    @PostMapping("/addFeeDetail")
+    @ResponseBody
+    public R addFeeDetail(@RequestBody SrmFeeDetailEntity detail) {
+        srmFeeService.addFeeDetail(
+                detail,
+                detail.getCreateBy()
+        );
+
+        return R.ok();
+    }
+
+    /**
+     * 更新费用明细
+     */
+    @PostMapping("/updateFeeDetail")
+    @ResponseBody
+    public R updateFeeDetail(@RequestBody SrmFeeDetailEntity detail) {
+        srmFeeService.updateFeeDetail(
+                detail,
+                detail.getUpdateBy()
+        );
+
+        return R.ok();
+    }
+
+    /**
+     * 删除费用明细
+     */
+    @PostMapping("/deleteFeeDetail")
+    @ResponseBody
+    public R deleteFeeDetail(@RequestBody SrmFeeDetailEntity detail) {
+        srmFeeService.deleteFeeDetail(
+                detail.getSite(),
+                detail.getFeeNo(),
+                detail.getItemNo()
+        );
+
+        return R.ok();
+    }
+    /**
+     * 查询关联申请单列表
+     */
+    @PostMapping("/getRequestFeeList")
+    @ResponseBody
+    public R getRequestFeeList(@RequestBody SrmInspectRequestFeeEntity entity) {
+        List<SrmInspectRequestFeeEntity> requestFees = srmFeeService.getRequestFeeList(entity.getSite(), entity.getFeeNo());
+        return R.ok().put("requestFees", requestFees);
+    }
+
+    /**
+     * 添加关联申请单（批量）
+     */
+    @PostMapping("/addRequestFees")
+    @ResponseBody
+    public R addRequestFees(@RequestBody AddRequestFeeVO vo) {
+        srmFeeService.addRequestFees(
+                vo.getSite(),
+                vo.getFeeNo(),
+                vo.getRequestNos(),
+                vo.getCurrentUser()
+        );
+
+        return R.ok();
+    }
+    /**
+     * 删除关联申请单
+     */
+    @PostMapping("/deleteRequestFee")
+    @ResponseBody
+    public R deleteRequestFee(@RequestBody SrmInspectRequestFeeEntity entity) {
+        srmFeeService.deleteRequestFee(
+                entity.getSite(),
+                entity.getFeeNo(),
+                entity.getRequestNo()
+        );
+        return R.ok();
+    }
+}
diff --git a/src/main/java/com/xujie/modules/inspection/data/AddRequestFeeVO.java b/src/main/java/com/xujie/modules/inspection/data/AddRequestFeeVO.java
new file mode 100644
index 0000000..dc9e003
--- /dev/null
+++ b/src/main/java/com/xujie/modules/inspection/data/AddRequestFeeVO.java
@@ -0,0 +1,17 @@
+package com.xujie.modules.inspection.data;
+
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+public class AddRequestFeeVO {
+
+    private String site;
+
+    private String feeNo;
+
+    private String currentUser;
+
+    private List<String> requestNos;
+}
diff --git a/src/main/java/com/xujie/modules/inspection/entity/SrmFeeDetailEntity.java b/src/main/java/com/xujie/modules/inspection/entity/SrmFeeDetailEntity.java
new file mode 100644
index 0000000..6adb941
--- /dev/null
+++ b/src/main/java/com/xujie/modules/inspection/entity/SrmFeeDetailEntity.java
@@ -0,0 +1,40 @@
+package com.xujie.modules.inspection.entity;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.fasterxml.jackson.annotation.JsonFormat;
+import lombok.Data;
+import org.springframework.format.annotation.DateTimeFormat;
+
+import java.math.BigDecimal;
+import java.util.Date;
+
+@Data
+@TableName("srm_fee_detail")
+public class SrmFeeDetailEntity {
+
+    private String site;
+
+    private String feeNo;
+
+    private Integer itemNo;
+
+    private String feeType;
+
+    private BigDecimal amount;
+
+    private String remark;
+
+    private String createBy;
+
+    @DateTimeFormat(pattern = "yyyy-MM-dd")
+    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
+    private Date createDate;
+
+    private String updateBy;
+
+    @DateTimeFormat(pattern = "yyyy-MM-dd")
+    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
+    private Date updateDate;
+
+    private String requestNo;
+}
diff --git a/src/main/java/com/xujie/modules/inspection/entity/SrmFeeHeaderEntity.java b/src/main/java/com/xujie/modules/inspection/entity/SrmFeeHeaderEntity.java
new file mode 100644
index 0000000..136bf76
--- /dev/null
+++ b/src/main/java/com/xujie/modules/inspection/entity/SrmFeeHeaderEntity.java
@@ -0,0 +1,41 @@
+package com.xujie.modules.inspection.entity;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.fasterxml.jackson.annotation.JsonFormat;
+import com.xujie.common.utils.QueryPage;
+import lombok.Data;
+import org.springframework.format.annotation.DateTimeFormat;
+
+import java.math.BigDecimal;
+import java.util.Date;
+
+@Data
+@TableName("srm_fee_header")
+public class SrmFeeHeaderEntity extends QueryPage {
+
+    private String site;
+
+    private String feeNo;
+
+    @DateTimeFormat(pattern = "yyyy-MM-dd")
+    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
+    private Date feeDate;
+
+    private BigDecimal totalAmount;
+
+    private String createdBy;
+
+    @DateTimeFormat(pattern = "yyyy-MM-dd")
+    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
+    private Date createdDate;
+
+    private String updateBy;
+
+    @DateTimeFormat(pattern = "yyyy-MM-dd")
+    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
+    private Date updateDate;
+
+    private String applyUser;
+
+    private String remark;
+}
diff --git a/src/main/java/com/xujie/modules/inspection/entity/SrmInspectRequestFeeEntity.java b/src/main/java/com/xujie/modules/inspection/entity/SrmInspectRequestFeeEntity.java
new file mode 100644
index 0000000..34da388
--- /dev/null
+++ b/src/main/java/com/xujie/modules/inspection/entity/SrmInspectRequestFeeEntity.java
@@ -0,0 +1,25 @@
+package com.xujie.modules.inspection.entity;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.fasterxml.jackson.annotation.JsonFormat;
+import lombok.Data;
+import org.springframework.format.annotation.DateTimeFormat;
+
+import java.util.Date;
+
+@Data
+@TableName("srm_inspect_request_fee")
+public class SrmInspectRequestFeeEntity {
+
+    private String site;
+
+    private String feeNo;
+
+    private String requestNo;
+
+    private String createBy;
+
+    @DateTimeFormat(pattern = "yyyy-MM-dd")
+    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
+    private Date createDate;
+}
diff --git a/src/main/java/com/xujie/modules/inspection/mapper/SrmFeeMapper.java b/src/main/java/com/xujie/modules/inspection/mapper/SrmFeeMapper.java
new file mode 100644
index 0000000..065f42f
--- /dev/null
+++ b/src/main/java/com/xujie/modules/inspection/mapper/SrmFeeMapper.java
@@ -0,0 +1,98 @@
+package com.xujie.modules.inspection.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.xujie.modules.inspection.entity.SrmFeeDetailEntity;
+import com.xujie.modules.inspection.entity.SrmFeeHeaderEntity;
+import com.xujie.modules.inspection.entity.SrmInspectRequestFeeEntity;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+
+import java.util.List;
+
+/**
+ * 费用管理Mapper
+ */
+@Mapper
+public interface SrmFeeMapper extends BaseMapper<SrmFeeHeaderEntity> {
+
+    /**
+     * 分页查询费用主记录列表
+     */
+    IPage<SrmFeeHeaderEntity> searchFeeHeaderList(Page<SrmFeeHeaderEntity> page, @Param("query") SrmFeeHeaderEntity data);
+
+    /**
+     * 根据费用单号查询主记录
+     */
+    SrmFeeHeaderEntity getFeeHeaderByNo(@Param("site") String site, @Param("feeNo") String feeNo);
+
+    /**
+     * 插入费用主记录
+     */
+    void insertFeeHeader(SrmFeeHeaderEntity header);
+
+    /**
+     * 更新费用主记录
+     */
+    void updateFeeHeader(SrmFeeHeaderEntity header);
+
+    /**
+     * 删除费用主记录
+     */
+    void deleteFeeHeader(@Param("site") String site, @Param("feeNo") String feeNo);
+
+    /**
+     * 查询费用明细列表
+     */
+    List<SrmFeeDetailEntity> getFeeDetailList(@Param("site") String site, @Param("feeNo") String feeNo);
+
+    /**
+     * 插入费用明细（单条）
+     */
+    void insertFeeDetail(SrmFeeDetailEntity detail);
+
+    /**
+     * 批量插入费用明细
+     */
+    void batchInsertFeeDetail(@Param("list") List<SrmFeeDetailEntity> list);
+
+    /**
+     * 更新费用明细
+     */
+    void updateFeeDetail(SrmFeeDetailEntity detail);
+
+    /**
+     * 删除费用明细
+     */
+    void deleteFeeDetail(@Param("site") String site, @Param("feeNo") String feeNo);
+
+    /**
+     * 删除指定行的费用明细
+     */
+    void deleteFeeDetailByItemNo(@Param("site") String site, @Param("feeNo") String feeNo, @Param("itemNo") Integer itemNo);
+
+    /**
+     * 查询关联的申请单列表
+     */
+    List<SrmInspectRequestFeeEntity> getRequestFeeList(@Param("site") String site, @Param("feeNo") String feeNo);
+
+    /**
+     * 删除费用与申请单关联
+     */
+    void deleteRequestFee(@Param("site") String site, @Param("feeNo") String feeNo);
+
+    /**
+     * 删除指定的费用与申请单关联
+     */
+    void deleteRequestFeeByRequestNo(@Param("site") String site, @Param("feeNo") String feeNo, @Param("requestNo") String requestNo);
+
+    /**
+     * 获取下一个费用单号
+     */
+    String getNextFeeNo(@Param("site") String site);
+
+    void batchInsertRequestFee(@Param("list") List<SrmInspectRequestFeeEntity> list);
+
+    List<SrmFeeDetailEntity> getFeeDetailByRequestNo(@Param("site") String site,@Param("feeNo") String feeNo, @Param("requestNo") String requestNo);
+}
diff --git a/src/main/java/com/xujie/modules/inspection/service/SrmFeeService.java b/src/main/java/com/xujie/modules/inspection/service/SrmFeeService.java
new file mode 100644
index 0000000..fcd2582
--- /dev/null
+++ b/src/main/java/com/xujie/modules/inspection/service/SrmFeeService.java
@@ -0,0 +1,78 @@
+package com.xujie.modules.inspection.service;
+
+import com.xujie.common.utils.PageUtils;
+import com.xujie.modules.inspection.entity.SrmFeeDetailEntity;
+import com.xujie.modules.inspection.entity.SrmFeeHeaderEntity;
+import com.xujie.modules.inspection.entity.SrmInspectRequestFeeEntity;
+
+import java.util.List;
+
+/**
+ * 费用管理Service
+ */
+public interface SrmFeeService {
+
+    /**
+     * 分页查询费用主记录列表
+     */
+    PageUtils searchFeeHeaderList(SrmFeeHeaderEntity data);
+
+    /**
+     * 根据费用单号查询主记录
+     */
+    SrmFeeHeaderEntity getFeeHeaderByNo(String site, String feeNo);
+
+    /**
+     * 创建费用主记录
+     */
+    void createFeeHeader(SrmFeeHeaderEntity header);
+
+    /**
+     * 更新费用主记录
+     */
+    void updateFeeHeader(SrmFeeHeaderEntity header);
+
+    /**
+     * 删除费用记录（包括明细和关联申请单）
+     */
+    void deleteFeeRecord(String site, String feeNo);
+
+    /**
+     * 查询费用明细列表
+     */
+    List<SrmFeeDetailEntity> getFeeDetailList(String site, String feeNo);
+
+    /**
+     * 添加费用明细（单条）
+     */
+    void addFeeDetail(SrmFeeDetailEntity detail, String currentUser);
+
+    /**
+     * 更新费用明细
+     */
+    void updateFeeDetail(SrmFeeDetailEntity detail, String currentUser);
+
+    /**
+     * 删除费用明细
+     */
+    void deleteFeeDetail(String site, String feeNo, Integer itemNo);
+
+    /**
+     * 查询关联的申请单列表
+     */
+    List<SrmInspectRequestFeeEntity> getRequestFeeList(String site, String feeNo);
+
+    /**
+     * 删除关联申请单
+     */
+    void deleteRequestFee(String site, String feeNo, String requestNo);
+
+    /**
+     * 生成费用单号
+     */
+    String generateFeeNo(String site);
+
+    void addRequestFees(String site, String feeNo, List<String> requestNos, String currentUser);
+
+    List<SrmFeeDetailEntity> getFeeDetailByRequestNo(String site, String feeNo, String requestNo);
+}
diff --git a/src/main/java/com/xujie/modules/inspection/service/impl/SrmFeeServiceImpl.java b/src/main/java/com/xujie/modules/inspection/service/impl/SrmFeeServiceImpl.java
new file mode 100644
index 0000000..abdd72b
--- /dev/null
+++ b/src/main/java/com/xujie/modules/inspection/service/impl/SrmFeeServiceImpl.java
@@ -0,0 +1,204 @@
+package com.xujie.modules.inspection.service.impl;
+
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.xujie.common.utils.PageUtils;
+import com.xujie.modules.inspection.entity.SrmFeeDetailEntity;
+import com.xujie.modules.inspection.entity.SrmFeeHeaderEntity;
+import com.xujie.modules.inspection.entity.SrmInspectRequestFeeEntity;
+import com.xujie.modules.inspection.mapper.SrmFeeMapper;
+import com.xujie.modules.inspection.service.SrmFeeService;
+import com.xujie.modules.srm.mapper.SrmSupplierMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.math.BigDecimal;
+import java.util.Date;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * 费用管理Service实现类
+ */
+@Service
+public class SrmFeeServiceImpl implements SrmFeeService {
+
+    @Autowired
+    private SrmFeeMapper srmFeeMapper;
+
+    @Autowired
+    private SrmSupplierMapper srmSupplierMapper;
+
+    @Override
+    public PageUtils searchFeeHeaderList(SrmFeeHeaderEntity data) {
+        IPage<SrmFeeHeaderEntity> page = srmFeeMapper.searchFeeHeaderList(
+            new Page<>(data.getPage(), data.getLimit()), data);
+        return new PageUtils(page);
+    }
+
+    @Override
+    public SrmFeeHeaderEntity getFeeHeaderByNo(String site, String feeNo) {
+        return srmFeeMapper.getFeeHeaderByNo(site, feeNo);
+    }
+
+    @Override
+    @Transactional
+    public void createFeeHeader(SrmFeeHeaderEntity header) {
+        // 生成费用单号
+        if (header.getFeeNo() == null || header.getFeeNo().isEmpty()) {
+            header.setFeeNo(generateFeeNo(header.getSite()));
+        }
+
+        // 设置默认值
+        if (header.getTotalAmount() == null) {
+            header.setTotalAmount(BigDecimal.ZERO);
+        }
+
+        srmFeeMapper.insertFeeHeader(header);
+    }
+
+    @Override
+    @Transactional
+    public void updateFeeHeader(SrmFeeHeaderEntity header) {
+        srmFeeMapper.updateFeeHeader(header);
+    }
+
+    @Override
+    @Transactional
+    public void deleteFeeRecord(String site, String feeNo) {
+        // 删除明细
+        srmFeeMapper.deleteFeeDetail(site, feeNo);
+        // 删除关联申请单
+        srmFeeMapper.deleteRequestFee(site, feeNo);
+        // 删除主记录
+        srmFeeMapper.deleteFeeHeader(site, feeNo);
+    }
+
+    @Override
+    public List<SrmFeeDetailEntity> getFeeDetailList(String site, String feeNo) {
+        return srmFeeMapper.getFeeDetailList(site, feeNo);
+    }
+
+    @Override
+    @Transactional
+    public void addFeeDetail(SrmFeeDetailEntity detail, String currentUser) {
+        // 获取当前最大行号
+        List<SrmFeeDetailEntity> existingDetails = srmFeeMapper.getFeeDetailList(detail.getSite(), detail.getFeeNo());
+        int maxItemNo = existingDetails.stream()
+            .mapToInt(SrmFeeDetailEntity::getItemNo)
+            .max()
+            .orElse(0);
+
+        // 设置新明细的属性
+        detail.setItemNo(maxItemNo + 1);
+        detail.setCreateBy(currentUser);
+        detail.setUpdateBy(currentUser);
+
+        // 插入明细
+        srmFeeMapper.insertFeeDetail(detail);
+
+        // 更新主表总金额
+        updateTotalAmount(detail.getSite(), detail.getFeeNo());
+    }
+
+    @Override
+    @Transactional
+    public void updateFeeDetail(SrmFeeDetailEntity detail, String currentUser) {
+        detail.setUpdateBy(currentUser);
+        srmFeeMapper.updateFeeDetail(detail);
+
+        // 更新主表总金额
+        updateTotalAmount(detail.getSite(), detail.getFeeNo());
+    }
+
+    @Override
+    @Transactional
+    public void deleteFeeDetail(String site, String feeNo, Integer itemNo) {
+        srmFeeMapper.deleteFeeDetailByItemNo(site, feeNo, itemNo);
+
+        // 重新排序行号
+        resortItemNos(site, feeNo);
+
+        // 更新主表总金额
+        updateTotalAmount(site, feeNo);
+    }
+
+    @Override
+    public List<SrmInspectRequestFeeEntity> getRequestFeeList(String site, String feeNo) {
+        return srmFeeMapper.getRequestFeeList(site, feeNo);
+    }
+
+    @Override
+    @Transactional
+    public void addRequestFees(String site, String feeNo, List<String> requestNos, String currentUser) {
+        if (requestNos == null || requestNos.isEmpty()) {
+            return;
+        }
+        List<SrmInspectRequestFeeEntity> list = requestNos.stream().map(requestNo -> {
+            SrmInspectRequestFeeEntity entity = new SrmInspectRequestFeeEntity();
+            entity.setSite(site);
+            entity.setFeeNo(feeNo);
+            entity.setRequestNo(requestNo);
+            entity.setCreateBy(currentUser);
+            return entity;
+        }).collect(Collectors.toList());
+
+        srmFeeMapper.batchInsertRequestFee(list);
+    }
+
+    @Override
+    public List<SrmFeeDetailEntity> getFeeDetailByRequestNo(String site, String feeNo, String requestNo) {
+        return srmFeeMapper.getFeeDetailByRequestNo(site, feeNo, requestNo);
+    }
+
+
+    @Override
+    @Transactional
+    public void deleteRequestFee(String site, String feeNo, String requestNo) {
+        srmFeeMapper.deleteRequestFeeByRequestNo(site, feeNo, requestNo);
+    }
+
+    /**
+     * 生成费用单号 - 模仿任务单编号生成方式
+     */
+    @Override
+    public String generateFeeNo(String site) {
+        srmSupplierMapper.updateTransNo(site, "FEE");
+        String transNo = srmSupplierMapper.getTransNo(site, "FEE");
+        return transNo;
+    }
+
+    /**
+     * 更新主表总金额
+     */
+    private void updateTotalAmount(String site, String feeNo) {
+        List<SrmFeeDetailEntity> details = srmFeeMapper.getFeeDetailList(site, feeNo);
+        BigDecimal totalAmount = details.stream()
+            .map(SrmFeeDetailEntity::getAmount)
+            .filter(amount -> amount != null)
+            .reduce(BigDecimal.ZERO, BigDecimal::add);
+
+        // 使用MyBatis-Plus的UpdateWrapper只更新total_amount字段，避免其他字段被覆盖为null
+        com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper<SrmFeeHeaderEntity> updateWrapper =
+            new com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper<>();
+        updateWrapper.eq("site", site)
+                    .eq("fee_no", feeNo)
+                    .set("total_amount", totalAmount)
+                    .set("update_date", new Date());
+
+        srmFeeMapper.update(null, updateWrapper);
+    }
+
+    /**
+     * 重新排序行号
+     */
+    private void resortItemNos(String site, String feeNo) {
+        List<SrmFeeDetailEntity> details = srmFeeMapper.getFeeDetailList(site, feeNo);
+        int itemNo = 1;
+        for (SrmFeeDetailEntity detail : details) {
+            detail.setItemNo(itemNo++);
+            srmFeeMapper.updateFeeDetail(detail);
+        }
+    }
+}
diff --git a/src/main/resources/mapper/inspection/SrmFeeMapper.xml b/src/main/resources/mapper/inspection/SrmFeeMapper.xml
new file mode 100644
index 0000000..21a1e7b
--- /dev/null
+++ b/src/main/resources/mapper/inspection/SrmFeeMapper.xml
@@ -0,0 +1,213 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+
+<mapper namespace="com.xujie.modules.inspection.mapper.SrmFeeMapper">
+
+    <!-- 费用主记录ResultMap -->
+    <resultMap id="feeHeaderMap" type="com.xujie.modules.inspection.entity.SrmFeeHeaderEntity">
+        <result property="site" column="site"/>
+        <result property="feeNo" column="fee_no"/>
+        <result property="feeDate" column="fee_date"/>
+        <result property="totalAmount" column="total_amount"/>
+        <result property="createdBy" column="created_by"/>
+        <result property="createdDate" column="created_date"/>
+        <result property="updateBy" column="update_by"/>
+        <result property="updateDate" column="update_date"/>
+        <result property="applyUser" column="apply_user"/>
+        <result property="remark" column="remark"/>
+    </resultMap>
+
+    <!-- 费用明细ResultMap -->
+    <resultMap id="feeDetailMap" type="com.xujie.modules.inspection.entity.SrmFeeDetailEntity">
+        <result property="site" column="site"/>
+        <result property="feeNo" column="fee_no"/>
+        <result property="itemNo" column="item_no"/>
+        <result property="feeType" column="fee_type"/>
+        <result property="amount" column="amount"/>
+        <result property="remark" column="remark"/>
+        <result property="createBy" column="create_by"/>
+        <result property="createDate" column="create_date"/>
+        <result property="updateBy" column="update_by"/>
+        <result property="updateDate" column="update_date"/>
+    </resultMap>
+
+    <!-- 费用与申请单关联ResultMap -->
+    <resultMap id="requestFeeMap" type="com.xujie.modules.inspection.entity.SrmInspectRequestFeeEntity">
+        <result property="site" column="site"/>
+        <result property="feeNo" column="fee_no"/>
+        <result property="requestNo" column="request_no"/>
+        <result property="createBy" column="create_by"/>
+        <result property="createDate" column="create_date"/>
+    </resultMap>
+
+    <!-- 分页查询费用主记录列表 -->
+    <select id="searchFeeHeaderList" resultMap="feeHeaderMap">
+        SELECT site, fee_no, fee_date, total_amount, created_by, created_date,
+               update_by, update_date, apply_user, remark
+        FROM srm_fee_header
+        WHERE site = #{query.site}
+        <if test="query.feeNo != null and query.feeNo != ''">
+            AND fee_no LIKE '%' + #{query.feeNo} + '%'
+        </if>
+        <if test="query.applyUser != null and query.applyUser != ''">
+            AND apply_user LIKE '%' + #{query.applyUser} + '%'
+        </if>
+        <if test="query.feeDate != null">
+            AND fee_date &gt;= #{query.feeDate}
+        </if>
+        ORDER BY created_date DESC
+    </select>
+
+    <!-- 根据费用单号查询主记录 -->
+    <select id="getFeeHeaderByNo" resultMap="feeHeaderMap">
+        SELECT site, fee_no, fee_date, total_amount, created_by, created_date,
+               update_by, update_date, apply_user, remark
+        FROM srm_fee_header
+        WHERE site = #{site} AND fee_no = #{feeNo}
+    </select>
+
+    <!-- 插入费用主记录 -->
+    <insert id="insertFeeHeader">
+        INSERT INTO srm_fee_header (
+            site, fee_no, fee_date, total_amount, created_by, created_date,
+            update_by, update_date, apply_user, remark
+        ) VALUES (
+            #{site}, #{feeNo}, #{feeDate}, #{totalAmount}, #{createdBy}, GETDATE(),
+            #{updateBy}, GETDATE(), #{applyUser}, #{remark}
+        )
+    </insert>
+
+    <!-- 更新费用主记录 -->
+    <update id="updateFeeHeader">
+        UPDATE srm_fee_header
+        SET fee_date = #{feeDate},
+            total_amount = #{totalAmount},
+            update_by = #{updateBy},
+            update_date = GETDATE(),
+            apply_user = #{applyUser},
+            remark = #{remark}
+        WHERE site = #{site} AND fee_no = #{feeNo}
+    </update>
+
+    <!-- 删除费用主记录 -->
+    <delete id="deleteFeeHeader">
+        DELETE FROM srm_fee_header
+        WHERE site = #{site} AND fee_no = #{feeNo}
+    </delete>
+
+    <!-- 查询费用明细列表 -->
+    <select id="getFeeDetailList" resultMap="feeDetailMap">
+        SELECT site, fee_no, item_no, fee_type, amount, remark,
+               create_by, create_date, update_by, update_date
+        FROM srm_fee_detail
+        WHERE site = #{site} AND fee_no = #{feeNo}
+        ORDER BY item_no
+    </select>
+
+    <!-- 插入费用明细（单条） -->
+    <insert id="insertFeeDetail">
+        INSERT INTO srm_fee_detail (
+            site, fee_no, item_no, fee_type, amount, remark,
+            create_by, create_date, update_by, update_date
+        ) VALUES (
+            #{site}, #{feeNo}, #{itemNo}, #{feeType}, #{amount}, #{remark},
+            #{createBy}, GETDATE(), #{updateBy}, GETDATE()
+        )
+    </insert>
+
+    <!-- 批量插入费用明细 -->
+    <insert id="batchInsertFeeDetail">
+        INSERT INTO srm_fee_detail (
+            site, fee_no, item_no, fee_type, amount, remark,
+            create_by, create_date, update_by, update_date
+        ) VALUES
+        <foreach collection="list" item="item" separator=",">
+            (
+                #{item.site}, #{item.feeNo}, #{item.itemNo}, #{item.feeType},
+                #{item.amount}, #{item.remark}, #{item.createBy}, GETDATE(),
+                #{item.updateBy}, GETDATE()
+            )
+        </foreach>
+    </insert>
+
+    <!-- 更新费用明细 -->
+    <update id="updateFeeDetail">
+        UPDATE srm_fee_detail
+        SET fee_type = #{feeType},
+            amount = #{amount},
+            remark = #{remark},
+            update_by = #{updateBy},
+            update_date = GETDATE()
+        WHERE site = #{site} AND fee_no = #{feeNo} AND item_no = #{itemNo}
+    </update>
+
+    <!-- 删除费用明细 -->
+    <delete id="deleteFeeDetail">
+        DELETE FROM srm_fee_detail
+        WHERE site = #{site} AND fee_no = #{feeNo}
+    </delete>
+
+    <!-- 删除指定行的费用明细 -->
+    <delete id="deleteFeeDetailByItemNo">
+        DELETE FROM srm_fee_detail
+        WHERE site = #{site} AND fee_no = #{feeNo} AND item_no = #{itemNo}
+    </delete>
+
+    <!-- 查询关联的申请单列表 -->
+    <select id="getRequestFeeList" resultMap="requestFeeMap">
+        SELECT site, fee_no, request_no, create_by, create_date
+        FROM srm_inspect_request_fee
+        WHERE site = #{site} AND fee_no = #{feeNo}
+        ORDER BY create_date
+    </select>
+
+    <insert id="batchInsertRequestFee">
+        INSERT INTO srm_inspect_request_fee
+        (
+        site,
+        fee_no,
+        request_no,
+        create_by,
+        create_date
+        )
+        VALUES
+        <foreach collection="list" item="item" separator=",">
+            (
+            #{item.site},
+            #{item.feeNo},
+            #{item.requestNo},
+            #{item.createBy},
+            GETDATE()
+            )
+        </foreach>
+    </insert>
+
+    <!-- 删除费用与申请单关联 -->
+    <delete id="deleteRequestFee">
+        DELETE FROM srm_inspect_request_fee
+        WHERE site = #{site} AND fee_no = #{feeNo}
+    </delete>
+
+    <!-- 删除指定的费用与申请单关联 -->
+    <delete id="deleteRequestFeeByRequestNo">
+        DELETE FROM srm_inspect_request_fee
+        WHERE site = #{site} AND fee_no = #{feeNo} AND request_no = #{requestNo}
+    </delete>
+
+    <!-- 获取下一个费用单号 -->
+    <select id="getNextFeeNo" resultType="java.lang.String">
+        SELECT ISNULL(MAX(fee_no), 'FEE000000')
+        FROM srm_fee_header
+        WHERE site = #{site}
+    </select>
+    
+    <select id="getFeeDetailByRequestNo" resultMap="feeDetailMap">
+        SELECT r.site, r.fee_no, r.item_no, r.fee_type, r.amount, r.remark,
+               r.create_by, r.create_date, r.update_by, r.update_date
+        FROM srm_inspect_request_fee f
+        LEFT JOIN srm_fee_detail r ON f.fee_no = r.fee_no AND f.site = r.site
+        WHERE f.request_no = #{requestNo}
+        AND f.site = #{site}
+    </select>
+
+</mapper>