diff --git a/src/main/java/com/spring/modules/quote/service/impl/QuoteDetailBomTreeServiceImpl.java b/src/main/java/com/spring/modules/quote/service/impl/QuoteDetailBomTreeServiceImpl.java
index 4d13c83a..bf10d15b 100644
--- a/src/main/java/com/spring/modules/quote/service/impl/QuoteDetailBomTreeServiceImpl.java
+++ b/src/main/java/com/spring/modules/quote/service/impl/QuoteDetailBomTreeServiceImpl.java
@@ -104,7 +104,8 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
     public long initQuoteDetailBomTree(QuoteDetail detail, Long parentId, Integer level) {
         // 阶段一：事务外，获取 IFS 连接工厂并递归收集数据（含并行 IFS 成本查询）
         Supplier<Server> ifsConFactory = resolveIfsConFactory();
-        BomNodeData rootNode = collectBomData(detail, parentId, level, ifsConFactory);
+        Map<String, BigDecimal> costCache = new ConcurrentHashMap<>();
+        BomNodeData rootNode = collectBomData(detail, parentId, level, ifsConFactory, costCache);
         if (rootNode == null) {
             return 0;
         }
@@ -128,7 +129,7 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
      *
      * @param ifsConFactory IFS 连接工厂，每个并发线程调用 get() 获取独立连接，避免共享连接线程安全问题
      */
-    private BomNodeData collectBomData(QuoteDetail detail, Long parentId, Integer level, Supplier<Server> ifsConFactory) {
+    private BomNodeData collectBomData(QuoteDetail detail, Long parentId, Integer level, Supplier<Server> ifsConFactory, Map<String, BigDecimal> costCache) {
         // 确定 BOM 类型
         if (parentId.equals(0L)) {
             detail.setBomType("Manufacturing");
@@ -189,7 +190,7 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
             if (Objects.nonNull(childBomCheck) && "Y".equals(component.getBomFlag())) {
                 log.debug("[BOM_PROCESS] 递归处理半成品 - PartNo: {}", component.getComponentPart());
                 // 递归收集子节点，parentId 占位 -1，写入时由 doSaveBomDataRecursive 覆盖
-                BomNodeData childNode = collectBomData(childDetail, -1L, level + 1, ifsConFactory);
+                BomNodeData childNode = collectBomData(childDetail, -1L, level + 1, ifsConFactory, costCache);
                 if (childNode != null) {
                     nodeData.children.add(childNode);
                     // 半成品：bomId 在写入阶段填充，先清零价格（IFS 并行阶段会覆盖）
@@ -231,7 +232,7 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
                         Server conn = null;
                         try {
                             conn = connectionPool.take();
-                            getFinalPartCost(component, conn);
+                            getFinalPartCost(component, conn, costCache);
                         } catch (InterruptedException e) {
                             Thread.currentThread().interrupt();
                             log.warn("[BOM_PROCESS] 并行成本查询线程被中断 - PartNo: {}", component.getComponentPart());
@@ -336,6 +337,9 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
 
     @Override
     public void changeQuoteDetailBomTree(QuoteDetailBomTree tree) {
+        long startTime = System.currentTimeMillis();
+        log.info("========== [PERF_LOG] START changeQuoteDetailBomTree for QuoteDetailId: {} ==========", tree.getQuoteDetailId());
+
         QuoteDetail detail = null;
         BomNodeData nodeData = null;
         Long newParentId = 0L;
@@ -353,10 +357,13 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
             detail.setAlternativeNo(tree.getAlternativeNo());
 
             // 先在事务外完成所有 IFS 调用和数据收集，避免 IFS 阻塞期间持有数据库行锁
+            long collectStartTime = System.currentTimeMillis();
             Supplier<Server> ifsConFactory = resolveIfsConFactory();
             newParentId = bomTree.getParentId();
             Integer newLevel = Optional.ofNullable(tree.getLevel()).orElse(0);
-            nodeData = collectBomData(detail, newParentId, newLevel, ifsConFactory);
+            Map<String, BigDecimal> costCache = new ConcurrentHashMap<>();
+            nodeData = collectBomData(detail, newParentId, newLevel, ifsConFactory, costCache);
+            log.info("[PERF_LOG] Phase 1: collectBomData (including IFS calls) took {} ms", (System.currentTimeMillis() - collectStartTime));
         } else {
             detail = new QuoteDetail();
             detail.setQuoteId(tree.getQuoteId());
@@ -371,8 +378,11 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
             detail.setAlternativeNo(tree.getAlternativeNo());
 
             // 先收集数据，再写入
+            long collectStartTime = System.currentTimeMillis();
             Supplier<Server> ifsConFactory = resolveIfsConFactory();
-            nodeData = collectBomData(detail, 0L, 0, ifsConFactory);
+            Map<String, BigDecimal> costCache = new ConcurrentHashMap<>();
+            nodeData = collectBomData(detail, 0L, 0, ifsConFactory, costCache);
+            log.info("[PERF_LOG] Phase 1: collectBomData (including IFS calls) took {} ms", (System.currentTimeMillis() - collectStartTime));
         }
 
         // 数据已就绪，开启短事务执行纯 DB 写入和成本计算
@@ -381,6 +391,7 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
         final Long finalNewParentId = newParentId;
         final QuoteDetailBomTree finalBomTree = bomTree;
 
+        long transactionStartTime = System.currentTimeMillis();
         transactionTemplate.execute(status -> {
             // 1. 执行 BOM 结构切换的 DB 写入
             if (Objects.nonNull(tree.getId())) {
@@ -400,24 +411,30 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
                         .update();
             } else {
                 if (finalNodeData != null) {
+                    lambdaUpdate().eq(QuoteDetailBomTree::getQuoteDetailId, finalDetail.getId()).remove();
+                    quoteDetailBomService.lambdaUpdate().eq(QuoteDetailBom::getQuoteDetailId, finalDetail.getId()).remove();
+                    quoteDetailRoutingService.lambdaUpdate().eq(QuoteDetailRouting::getQuoteDetailId, finalDetail.getId()).remove();
                     doSaveBomDataRecursive(finalNodeData, finalDetail, 0L);
                 }
             }
             return null;
         });
+        log.info("[PERF_LOG] Phase 2: DB Transaction (Delete old tree & Save new tree) took {} ms", (System.currentTimeMillis() - transactionStartTime));
 
         // 2. 重新计算成本 (如果开启)
         // 移出事务外执行，避免长事务锁表导致其他用户无法查看/编辑条目明细
         if (Boolean.TRUE.equals(tree.getRecalculateCost()) && finalDetail != null) {
             log.info("[BOM_SWITCH] Recalculate cost is enabled, executing cost calculation for QuoteDetailId: {}", finalDetail.getId());
+            long calcCostStartTime = System.currentTimeMillis();
             try {
                 quoteDetailService.queryQuoteDetailCost(finalDetail);
-                log.info("[BOM_SWITCH] Cost calculation completed successfully for QuoteDetailId: {}", finalDetail.getId());
+                log.info("[PERF_LOG] Phase 3: Cost calculation (queryQuoteDetailCost) took {} ms", (System.currentTimeMillis() - calcCostStartTime));
             } catch (Exception e) {
                 log.error("[BOM_SWITCH] Cost calculation failed for QuoteDetailId: {}, Error: {}", finalDetail.getId(), e.getMessage(), e);
                 throw new RuntimeException("BOM切换成功，但成本重新计算失败: " + e.getMessage());
             }
         }
+        log.info("========== [PERF_LOG] END changeQuoteDetailBomTree. Total time: {} ms ==========", (System.currentTimeMillis() - startTime));
     }
 
     // =========================================================================
@@ -694,12 +711,22 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
     /**
      * 获取物料成本（带重试机制）
      */
-    private void getFinalPartCost(QuoteDetailBom component, Server ifsServer) {
+    private void getFinalPartCost(QuoteDetailBom component, Server ifsServer, Map<String, BigDecimal> costCache) {
         final int MAX_RETRY_COUNT = 2;
         final long RETRY_INTERVAL_MS = 500;
 
         String partNo = component.getComponentPart();
         String site = component.getSite();
+        
+        String cacheKey = site + "_" + partNo;
+        BigDecimal cachedCost = costCache.get(cacheKey);
+        if (cachedCost != null) {
+            component.setUnitPrice(cachedCost);
+            component.setActualPrice(cachedCost);
+            component.setQuotePrice(cachedCost);
+            log.info("[COST_QUERY] 从缓存读取成功 - PartNo: {}, Site: {}, UnitCost: {}", partNo, site, cachedCost);
+            return;
+        }
 
         log.info("[COST_QUERY] 开始查询物料成本 - PartNo: {}, Site: {}", partNo, site);
 
@@ -723,6 +750,7 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
                     component.setUnitPrice(unitCost);
                     component.setActualPrice(unitCost);
                     component.setQuotePrice(unitCost);
+                    costCache.put(cacheKey, unitCost);
 
                     log.info("[COST_QUERY] 查询成功 - PartNo: {}, Site: {}, UnitCost: {}, 尝试次数: {}",
                             partNo, site, unitCost, retryCount);
@@ -779,6 +807,7 @@ public class QuoteDetailBomTreeServiceImpl extends ServiceImpl<QuoteDetailBomTre
             component.setUnitPrice(BigDecimal.ZERO);
             component.setActualPrice(BigDecimal.ZERO);
             component.setQuotePrice(BigDecimal.ZERO);
+            costCache.put(cacheKey, BigDecimal.ZERO);
         }
     }
 
diff --git a/src/main/java/com/spring/modules/quote/service/impl/QuoteDetailServiceImpl.java b/src/main/java/com/spring/modules/quote/service/impl/QuoteDetailServiceImpl.java
index e3d6e6dc..b1ac173f 100644
--- a/src/main/java/com/spring/modules/quote/service/impl/QuoteDetailServiceImpl.java
+++ b/src/main/java/com/spring/modules/quote/service/impl/QuoteDetailServiceImpl.java
@@ -202,10 +202,16 @@ public class QuoteDetailServiceImpl extends ServiceImpl<QuoteDetailMapper, Quote
 
     @Override
     public Map<String, Object> queryQuoteDetailCost(QuoteDetail detail) {
-        log.info("========== [COST_CALC] START - QuoteDetailId: {} ==========", detail.getId());
+        long perfTotalStartTime = System.currentTimeMillis();
+        log.info("========== [COST_CALC] [PERF_LOG] START - QuoteDetailId: {} ==========", detail.getId());
         
         QuoteDetail quoteDetail = getById(detail.getId());
         Map<String, Object> map = new HashMap<>();
+
+        // 用于缓存IFS接口获取的物料预估成本，避免在循环中重复调用降低性能
+        Map<String, BigDecimal> estimatedCostCache = new HashMap<>();
+
+        long perfAttrStartTime = System.currentTimeMillis();
         // 1、工具成本
         BigDecimal toolCost = computedToolCost(quoteDetail.getId());
         // 2、其他成本
@@ -218,9 +224,15 @@ public class QuoteDetailServiceImpl extends ServiceImpl<QuoteDetailMapper, Quote
         // 2-2、运输成本
         BigDecimal shippingCost = BigDecimal.ZERO;
         shippingCost = computedShippingCost(attributeList);
-        QuoteDetailBomTree one = quoteDetailBomTreeService.lambdaQuery()
+        log.info("[PERF_LOG] Fetching Attributes and Tools took {} ms", (System.currentTimeMillis() - perfAttrStartTime));
+
+        long perfTreeStartTime = System.currentTimeMillis();
+        List<QuoteDetailBomTree> roots = quoteDetailBomTreeService.lambdaQuery()
                 .eq(QuoteDetailBomTree::getQuoteDetailId, quoteDetail.getId())
-                .eq(QuoteDetailBomTree::getParentId, 0L).one();
+                .eq(QuoteDetailBomTree::getParentId, 0L)
+                .orderByDesc(QuoteDetailBomTree::getId)
+                .list();
+        QuoteDetailBomTree one = roots.isEmpty() ? null : roots.get(0);
 
         // 3、工艺成本
         BigDecimal labourCost = BigDecimal.ZERO;// 人工成本
@@ -237,12 +249,13 @@ public class QuoteDetailServiceImpl extends ServiceImpl<QuoteDetailMapper, Quote
                 .orderByDesc(QuoteDetailBomTree::getId)
                 .list();
         
-        log.info("[COST_CALC] Total BomTree nodes: {}, Root node exists: {}", list.size(), one != null);
+        log.info("[COST_CALC] [PERF_LOG] Fetching {} BomTree nodes took {} ms", list.size(), (System.currentTimeMillis() - perfTreeStartTime));
 
         // 判断 报价BomTree是否存在
         if (Objects.nonNull(one)) {
             log.info("[COST_CALC] Root node - PartNo: {}, BomType: {}, TreeId: {}", one.getPartNo(), one.getBomType(), one.getId());
             
+            long perfRoutingStartTime = System.currentTimeMillis();
             // 查询 工艺
             QuoteDetailRouting queryRouting = new QuoteDetailRouting();
             queryRouting.setQuoteDetailId(quoteDetail.getId());
@@ -250,8 +263,9 @@ public class QuoteDetailServiceImpl extends ServiceImpl<QuoteDetailMapper, Quote
             queryRouting.setTreeId(one.getId());
             List<QuoteDetailRouting> routingList = quoteDetailRoutingService.queryQuoteDetailRouting(queryRouting);
             Map<Long,List<QuoteDetailRouting>> routingMap = routingList.stream().collect(Collectors.groupingBy(QuoteDetailRouting::getTreeId));
-            log.info("[COST_CALC] Total routing records loaded: {}", routingList.size());
+            log.info("[COST_CALC] [PERF_LOG] Fetching and grouping {} Routing records took {} ms", routingList.size(), (System.currentTimeMillis() - perfRoutingStartTime));
             
+            long perfBomStartTime = System.currentTimeMillis();
             // 查询 BOM
             QuoteDetailBom quoteDetailBom = new QuoteDetailBom();
             quoteDetailBom.setQuoteDetailId(quoteDetail.getId());
@@ -259,10 +273,14 @@ public class QuoteDetailServiceImpl extends ServiceImpl<QuoteDetailMapper, Quote
             quoteDetailBom.setTreeId(one.getId());
             List<QuoteDetailBom> bomList = quoteDetailBomService.queryQuoteDetailBom(quoteDetailBom);
             Map<Long,List<QuoteDetailBom>> bomMap = bomList.stream().collect(Collectors.groupingBy(QuoteDetailBom::getTreeId));
-            log.info("[COST_CALC] Total BOM component records loaded: {}", bomList.size());
+            log.info("[COST_CALC] [PERF_LOG] Fetching and grouping {} BOM component records took {} ms", bomList.size(), (System.currentTimeMillis() - perfBomStartTime));
 
             long treeId = 0;
             int nodeIndex = 0;
+            
+            long perfConvolutionStartTime = System.currentTimeMillis();
+            long totalUpdateDbTime = 0;
+            
             // 第一层BOM
             for (QuoteDetailBomTree bomTree : list) {
                 nodeIndex++;
@@ -307,8 +325,13 @@ public class QuoteDetailServiceImpl extends ServiceImpl<QuoteDetailMapper, Quote
                 }
                 // 如果半成品的BOM类型是Purchase，则加上该物料的预估材料成本(estimated_material_cost)
                 if ("Purchase".equals(bomTree.getBomType())) {
-                    BigDecimal estimatedMaterialCost = quoteDetailBomTreeService.queryEstimatedMaterialCost(
-                            bomTree.getSite(), bomTree.getPartNo());
+                    String cacheKey = bomTree.getSite() + "_" + bomTree.getPartNo();
+                    BigDecimal estimatedMaterialCost = estimatedCostCache.computeIfAbsent(cacheKey, k -> {
+                        long ifsStart = System.currentTimeMillis();
+                        BigDecimal cost = quoteDetailBomTreeService.queryEstimatedMaterialCost(bomTree.getSite(), bomTree.getPartNo());
+                        log.info("[COST_CALC] [PERF_LOG] Fetched estimated material cost for {} from IFS/DB in {} ms", bomTree.getPartNo(), (System.currentTimeMillis() - ifsStart));
+                        return cost == null ? BigDecimal.ZERO : cost;
+                    });
                     bomQuotePrice = bomQuotePrice.add(estimatedMaterialCost);
                     log.info("[COST_CALC] Semi-finished product {} is Purchase type, add estimated material cost {}, accumulated cost is {}", 
                             bomTree.getPartNo(), estimatedMaterialCost, bomQuotePrice);
@@ -353,12 +376,11 @@ public class QuoteDetailServiceImpl extends ServiceImpl<QuoteDetailMapper, Quote
                         bom.setQuoteUnitPrice(decimal);
                         bom.setActualQuotePrice(decimal);
                         bom.setAllQuotePrice(decimal);
-                        quoteDetailBomService.lambdaUpdate()
-                                .set(QuoteDetailBom::getQuotePrice,bom.getQuotePrice())
-                                .set(QuoteDetailBom::getActualPrice,bom.getActualPrice())
-                                .set(QuoteDetailBom::getUnitPrice,bom.getUnitPrice())
-                                .eq(QuoteDetailBom::getId,bom.getId())
-                                .update();
+                    }
+                    if (!parentBomList.isEmpty()) {
+                        long dbUpdateStart = System.currentTimeMillis();
+                        quoteDetailBomService.updateBatchById(parentBomList);
+                        totalUpdateDbTime += (System.currentTimeMillis() - dbUpdateStart);
                     }
 
                     BigDecimal qtyPerAssembly = BigDecimal.ONE;
@@ -418,7 +440,7 @@ public class QuoteDetailServiceImpl extends ServiceImpl<QuoteDetailMapper, Quote
                     actualQuotePrice = actualQuotePrice.add(bom.getActualQuotePrice());
                 }
             }
-
+            log.info("[COST_CALC] [PERF_LOG] Main convolution loop took {} ms, out of which DB updates took {} ms", (System.currentTimeMillis() - perfConvolutionStartTime), totalUpdateDbTime);
         }
         // 测试
         BigDecimal testCost = BigDecimal.ZERO;