diff --git a/openhis-ui-vue3/src/views/medicationmanagement/requisitionManagement/requisitionManagement/index.vue b/openhis-ui-vue3/src/views/medicationmanagement/requisitionManagement/requisitionManagement/index.vue
index 6637f311..ee5025a4 100644
--- a/openhis-ui-vue3/src/views/medicationmanagement/requisitionManagement/requisitionManagement/index.vue
+++ b/openhis-ui-vue3/src/views/medicationmanagement/requisitionManagement/requisitionManagement/index.vue
@@ -988,10 +988,13 @@ function selectRow(rowValue, index) {
   form.purchaseinventoryList[index].unitList = rowValue.unitList[0];
   form.purchaseinventoryList[index].lotNumber = rowValue.lotNumber;
   form.purchaseinventoryList[index].ybNo = rowValue.ybNo;
-  form.purchaseinventoryList[index].sourceLocationId = '';
+  // #439 fix: 不清空sourceLocationId，保留handleAddRow设置的仓库ID
+  if (!form.purchaseinventoryList[index].sourceLocationId) {
+    form.purchaseinventoryList[index].sourceLocationId = '';
+  }
   getPharmacyCabinetList().then((res) => {
     purposeTypeListOptions.value = res.data;
-    // handleLocationClick(1, row, index)
+    handleLocationClick(1, rowValue, index)
   });
   form.purchaseinventoryList[index].itemQuantity = 0;
   form.purchaseinventoryList[index].totalPrice = 0;