diff --git a/web-admin/src/components/business/pl-plan-form-dialog/index.vue b/web-admin/src/components/business/pl-plan-form-dialog/index.vue
index 86eb3a4ec..c607f57d6 100644
--- a/web-admin/src/components/business/pl-plan-form-dialog/index.vue
+++ b/web-admin/src/components/business/pl-plan-form-dialog/index.vue
@@ -426,6 +426,7 @@
     isPackageAllowedForContractProduct,
     normalizePackageSpec,
     packageSpecsForProduct,
+    productPackageKey,
     type ContractProductRowLite
   } from '@/utils/pl-plan-contract-product'
   import { getPersonnelAffiliationLabel } from '@/utils/pl-personnel-cert'
@@ -1379,17 +1380,37 @@
       const index = target.deliveryIndex
       const delivery = deliveryForms.value[index]
       if (!delivery) return
-      const existingIds = new Set(
-        (delivery.products || []).map((row) => String(row.productId || '').trim()).filter(Boolean)
+      const cid = String(delivery?.contracts?.[0]?.contractId || '').trim()
+      const contractRows = cid ? contractProductRowsCache.value[cid] || [] : []
+      const existing = delivery.products || []
+      const existingKeys = new Set(
+        existing.map((row) => productPackageKey(row.productId, row.packageSpec)).filter(Boolean)
       )
+      const countByPid = new Map<string, number>()
+      for (const row of existing) {
+        const pid = String(row.productId || '').trim()
+        if (!pid) continue
+        countByPid.set(pid, (countByPid.get(pid) || 0) + 1)
+      }
       const added = (await buildRows()).filter((row) => {
         const pid = String(row.productId || '').trim()
-        if (!pid || existingIds.has(pid)) return false
-        existingIds.add(pid)
+        if (!pid) return false
+        const key = productPackageKey(row.productId, row.packageSpec)
+        const specs = packageSpecsForProduct(contractRows, pid)
+        // 同品多包装：可按包装份数追加空包装行，便于分别选包装
+        if (!normalizePackageSpec(row.packageSpec) && specs.length > 1) {
+          const count = countByPid.get(pid) || 0
+          if (count >= specs.length) return false
+          countByPid.set(pid, count + 1)
+          return true
+        }
+        if (key && existingKeys.has(key)) return false
+        if (key) existingKeys.add(key)
+        countByPid.set(pid, (countByPid.get(pid) || 0) + 1)
         return true
       })
       if (!added.length) {
-        ElMessage.info('所选产品已在送货段中')
+        ElMessage.info('所选产品（含包装）已在送货段中')
         return
       }
       deliveryForms.value = deliveryForms.value.map((row, idx) =>