diff --git a/inventory-web/src/views/stock/inbound/product.vue b/inventory-web/src/views/stock/inbound/product.vue
index 70af968..645a09d 100644
--- a/inventory-web/src/views/stock/inbound/product.vue
+++ b/inventory-web/src/views/stock/inbound/product.vue
@@ -1418,6 +1418,14 @@ const submitForm = async () => {
         production_end_time: form.production_time_range?.[1]
       }
       delete payload.production_time_range
+      // Update 模式：无成本/售价权限则剥离敏感字段，防止库管修改已入库的数据
+      // Create 模式：保留成本字段，确保 BOM 自动计算的值能正确提交
+      if (dialogStatus.value === 'update') {
+        if (!hasFormFieldPermission('raw_material_cost')) delete payload.raw_material_cost
+        if (!hasFormFieldPermission('unit_total_cost')) delete payload.unit_total_cost
+        if (!hasFormFieldPermission('total_price')) delete payload.total_price
+        if (!hasFormFieldPermission('sale_price')) delete payload.sale_price
+      }
       try {
         if(dialogStatus.value === 'create') {
           const res: any = await createProductInbound(payload)
diff --git a/inventory-web/src/views/stock/inbound/semi.vue b/inventory-web/src/views/stock/inbound/semi.vue
index aed6a32..e3dd44c 100644
--- a/inventory-web/src/views/stock/inbound/semi.vue
+++ b/inventory-web/src/views/stock/inbound/semi.vue
@@ -1507,6 +1507,13 @@ const submitForm = async () => {
         production_end_time: form.production_time_range?.[1] || null
       }
       delete payload.production_time_range
+      // Update 模式：无成本权限则剥离成本字段，防止库管修改已入库的成本数据
+      // Create 模式：保留成本字段，确保 BOM 自动计算的值能正确提交
+      if (dialogStatus.value === 'update') {
+        if (!hasFormFieldPermission('raw_material_cost')) delete payload.raw_material_cost
+        if (!hasFormFieldPermission('unit_total_cost')) delete payload.unit_total_cost
+        if (!hasFormFieldPermission('total_price')) delete payload.total_price
+      }
       try {
         if (dialogStatus.value === 'create') {
           const res: any = await createSemiInbound(payload)