diff --git a/app/src/main/java/com/shuwei/dish/match/ui/SubmitFoodActivity.kt b/app/src/main/java/com/shuwei/dish/match/ui/SubmitFoodActivity.kt
index 93bf3ea..51ba1b8 100644
--- a/app/src/main/java/com/shuwei/dish/match/ui/SubmitFoodActivity.kt
+++ b/app/src/main/java/com/shuwei/dish/match/ui/SubmitFoodActivity.kt
@@ -46,6 +46,9 @@ class SubmitFoodActivity : BaseActivity() {
         const val TAG = "SubmitFoodActivity"
         const val FOOD_ITEM = "foodItem"
         const val GOODS_LIST = "goodsList"
+
+        /** 本地临时 foodId 前缀；以此开头说明菜品尚未在服务器登记，提交时需清空让服务器分配真实 ID */
+        const val LOCAL_ID_PREFIX = "localId_"
     }
 
     private lateinit var binding: ActivitySubmitFoodBinding
@@ -298,9 +301,11 @@ class SubmitFoodActivity : BaseActivity() {
 
         val isSamplingData = food!!.cookMode == 1
         if (isSamplingData) {
-            val tempFoodId = cookFoodEntity.foodId.ifBlank { "${System.currentTimeMillis()}" }
+            val tempFoodId = cookFoodEntity.foodId
+                .ifBlank { "$LOCAL_ID_PREFIX${System.currentTimeMillis()}" }
             cookFoodEntity.foodId = tempFoodId
         }
+        // 主辅材统一在此赋 foodId；新加的调料行 foodId 由 buildSeasoningEntity 内部设置
         goodsList?.forEach { it.foodId = cookFoodEntity.foodId }
 
         lifecycleScope.launch {
@@ -337,6 +342,8 @@ class SubmitFoodActivity : BaseActivity() {
         lifecycleScope.launch {
             // 先移除 goodsList 中已有的调料数据(materialType==3),再以 adapter 中最新调料覆盖
             goodsList?.removeAll { it.materialType == 3 }
+            // 主辅材 foodId 统一以菜品 foodId 为准；新加调料行的 foodId 由 buildSeasoningEntity 内部设置
+            goodsList?.forEach { it.foodId = cookFoodEntity.foodId }
             seasoningAdapter.items
                 .filter { it.useWeight > 0.0 }
                 .forEach { goodsList?.add(buildSeasoningEntity(it)) }
@@ -351,8 +358,8 @@ class SubmitFoodActivity : BaseActivity() {
                 }
             }
 
-            val isSamplingData = food!!.cookMode == 1
-            if (isSamplingData) {
+            // 仅本地生成的临时 foodId 需清空，由服务器分配真实 ID；服务器下发的真实 foodId 直接保留
+            if (cookFoodEntity.foodId.startsWith(LOCAL_ID_PREFIX)) {
                 cookFoodEntity.foodId = ""
                 goodsList?.forEach { it.foodId = "" }
             }
@@ -370,6 +377,7 @@ class SubmitFoodActivity : BaseActivity() {
     private suspend fun buildSeasoningEntity(item: SeasoningWeightAdapter.Item): CookFoodGoodsEntity {
         val seasoning = appViewModel.getSeasoningByGoodsId(item.goodsId)
         return CookFoodGoodsEntity().also { entity ->
+            entity.foodId = cookFoodEntity.foodId
             entity.goodsId = item.goodsId
             entity.goodsName = item.goodsName
             entity.useWeight = item.useWeight