diff --git a/src/views/modules/quote/detail/quoteDetail.vue b/src/views/modules/quote/detail/quoteDetail.vue
index 6b79767..3947dbd 100644
--- a/src/views/modules/quote/detail/quoteDetail.vue
+++ b/src/views/modules/quote/detail/quoteDetail.vue
@@ -7,6 +7,7 @@ import {
   updateQuoteDetail,
   updateQuoteDetailShowFlag
 } from "../../../../api/quote/quoteDetail";
+import {queryQuoteGroupDetail} from "../../../../api/quote/quoteGroupDetail";
 import {getProjectPartList} from "../../../../api/project/project";
 import QuoteDetailCost from "./primary/quoteDetailCost.vue";
 import QuoteDetailTool from "./primary/quoteDetailTool.vue";
@@ -763,6 +764,8 @@ export default {
 
       againVisible:false,
       againRow:{},
+      // 平铺视图（不传 quoteGroupDetail 时）内部维护的 quoteGroupDetailId → currentQuoteDetailItemNo 映射
+      internalDefaultItemNoMap: {},
     }
   },
   methods:{
@@ -889,6 +892,9 @@ export default {
       }
       if (this.quoteGroupDetail){
         params.quoteGroupDetailId=this.quoteGroupDetail.id;
+      } else {
+        // 平铺模式：同步加载各报价明细组的默认条目映射，用于删除保护
+        this.loadGroupDetailMap();
       }
       this.queryLoading = true;
       queryQuoteDetail(params).then(({data})=>{
@@ -903,6 +909,28 @@ export default {
         this.queryLoading = false;
       })
     },
+    // 平铺模式下加载 quoteGroupDetail 映射，用于判断哪些条目行是默认报价行（不允许删除）
+    loadGroupDetailMap() {
+      if (!this.quote.id) {
+        this.internalDefaultItemNoMap = {}
+        return
+      }
+      queryQuoteGroupDetail({ quoteId: this.quote.id }).then(({ data }) => {
+        if (data && data.code === 0 && data.rows) {
+          const map = {}
+          data.rows.forEach(group => {
+            if (group.currentQuoteDetailItemNo) {
+              map[group.id] = group.currentQuoteDetailItemNo
+            }
+          })
+          this.internalDefaultItemNoMap = map
+        } else {
+          this.internalDefaultItemNoMap = {}
+        }
+      }).catch(() => {
+        this.internalDefaultItemNoMap = {}
+      })
+    },
     handleSaveQuoteDetailClick(){
       this.$refs.saveQuoteDetailForm.validate((valid,obj) => {
         if (valid){
@@ -1107,7 +1135,17 @@ export default {
       this.quoteGroupDetail.currentQuoteDetailItemNo = row.itemNo;
       // 直接触发emit事件
       this.$emit('currentQuoteDetailItemNo', oldVal);
-    }
+    },
+    // 判断某行是否为默认报价行（不允许删除）
+    // 单组视图（quoteGroupDetail 已传入）：对比 quoteGroupDetail.currentQuoteDetailItemNo
+    // 平铺视图（quoteGroupDetail 未传）：对比内部加载的 internalDefaultItemNoMap
+    isDefaultQuoteRow(row) {
+      if (this.quoteGroupDetail) {
+        return this.quoteGroupDetail.currentQuoteDetailItemNo === row.itemNo;
+      }
+      const defaultItemNo = this.internalDefaultItemNoMap[row.quoteGroupDetailId]
+      return defaultItemNo != null && defaultItemNo === row.itemNo;
+    },
   },
   watch:{
     quote(newVal,oldVal){
@@ -1225,7 +1263,7 @@ export default {
           <a type="text" v-if="row.status === '草稿' || row.status === '审批中'" @click="handleSaveQuoteDetail(row)">编辑</a>
         </template>
         <template v-if="isAuth('5011:detail:remove')">
-          <a type="text" v-if="row.status === '草稿' && !(quoteGroupDetail && quoteGroupDetail.currentQuoteDetailItemNo === row.itemNo)" @click="handleDeleteQuoteDetail(row)">删除</a>
+          <a type="text" v-if="(row.status === '草稿' || row.status === '审批中') && !isDefaultQuoteRow(row)" @click="handleDeleteQuoteDetail(row)">删除</a>
         </template>
         <template v-if="isAuth('5011:detail:again')">
 <!--          <a type="text" v-if="row.status !== '已完成'" @click="againQuoteDetail(row)">复制明细</a>-->
diff --git a/src/views/modules/quote/index.vue b/src/views/modules/quote/index.vue
index 5d93da6..b24c543 100644
--- a/src/views/modules/quote/index.vue
+++ b/src/views/modules/quote/index.vue
@@ -624,7 +624,7 @@ export default {
           // 这会导致：如果有20条报价，就会执行1+20=21次数据库查询
           // 解决方案：如果需要显示明细，应该在SQL中一次性JOIN查询，而不是循环查询
           // this.loadQuoteDetailInfo()
-          
+
           if (this.dataList[0] !== undefined) {
             this.handleSelect(this.dataList[0])
           } else {
@@ -1472,8 +1472,8 @@ export default {
     if (this.$route.params.ids){
       this.handleQueryByIds();
       return // 直接返回，避免执行其他逻辑
-    } 
-    
+    }
+
     // 从OA系统跳转过来
     if (this.$route.params.type === 'tokenLogin') {
       if (this.$route.params.docNo) {
@@ -1485,8 +1485,8 @@ export default {
       }
       this.handleSearch(0);
       return
-    } 
-    
+    }
+
     // 从项目页面跳转过来
     if (this.$route.params.type === 'project'){
       this.quoteForm = {