diff --git a/inventory-backend/app/api/v1/inbound/stock.py b/inventory-backend/app/api/v1/inbound/stock.py
index 7486e9e..6a38b06 100644
--- a/inventory-backend/app/api/v1/inbound/stock.py
+++ b/inventory-backend/app/api/v1/inbound/stock.py
@@ -1131,15 +1131,22 @@ def export_stocktake():
 def generate_missing_stocktake():
     """
     生成漏盘数据：
-    找出所有真实库存 > 0，但未被盘点扫描到的物料，
+    找出所有真实库存 > 0，但未被当前会话盘点扫描到的物料，
     自动生成盘点草稿，标记为盘亏（实盘=0，差异=-库存数）
     """
     try:
-        # 1. 获取所有已有盘点记录的 (source_table, stock_id) 集合
+        # ★ 获取 session_id 参数，用于隔离当前会话
+        data = request.get_json() or {}
+        session_id = data.get('session_id', '')
+
+        if not session_id:
+            return jsonify({'code': 400, 'msg': '缺少 session_id 参数'}), 400
+
+        # 1. 获取当前会话已有盘点记录的 (source_table, stock_id) 集合
         existing_records = db.session.query(
             StocktakeDraft.source_table,
             StocktakeDraft.stock_id
-        ).distinct().all()
+        ).filter(StocktakeDraft.session_id == session_id).distinct().all()
 
         scanned_keys = set()
         for src_table, stock_id in existing_records:
diff --git a/inventory-web/src/views/stock/stocktake/index.vue b/inventory-web/src/views/stock/stocktake/index.vue
index 14a9cfc..8ef1c00 100644
--- a/inventory-web/src/views/stock/stocktake/index.vue
+++ b/inventory-web/src/views/stock/stocktake/index.vue
@@ -986,11 +986,14 @@ const fetchInventoryList = async (silent = false) => {
       params: {
         page: 1,
         limit: 500,  // ★ 限制单次加载数量，防止内存溢出
-        keyword: listKeyword.value
+        keyword: listKeyword.value,
+        session_id: currentSessionId.value  // ★ 必须传递 session_id 隔离会话
       }
     })
 
     const scannedDrafts = res?.items || []
+    // ★ 使用返回的 total 获取真实已盘数量，而不是受限的数组长度
+    const totalScanned = res?.total || scannedDrafts.length
 
     // 保存全量草稿记录用于全局统计
     allScannedDrafts.value = scannedDrafts
@@ -1133,7 +1136,10 @@ const handleGenerateMissing = async () => {
     btnLoading.value = true
     const res = await request({
       url: '/v1/inbound/stock/stocktake/generate-missing',
-      method: 'post'
+      method: 'post',
+      data: {
+        session_id: currentSessionId.value  // ★ 必须传递 session_id 隔离会话
+      }
     })
 
     if (res.code === 200) {