diff --git a/inventory-web/src/App.vue b/inventory-web/src/App.vue
index 7895ea6..03e3fb2 100644
--- a/inventory-web/src/App.vue
+++ b/inventory-web/src/App.vue
@@ -239,7 +239,7 @@ const handleLogout = () => {
     <footer v-if="!isLoginPage" class="app-footer">
       <span class="version-tag">
         <el-icon style="vertical-align: middle; margin-right: 4px"><InfoFilled /></el-icon>
-        当前版本:V3.57
+        当前版本:V3.58
       </span>
     </footer>
 
diff --git a/inventory-web/src/views/stock/inbound/buy.vue b/inventory-web/src/views/stock/inbound/buy.vue
index bb9d003..c264ade 100644
--- a/inventory-web/src/views/stock/inbound/buy.vue
+++ b/inventory-web/src/views/stock/inbound/buy.vue
@@ -1929,20 +1929,24 @@ const confirmPurchaseImport = () => {
   const qty = Number(po.quantity) || 1
   form.in_quantity = qty
 
-  // 价格字段：仅具有单价查看权限的用户才自动填充
+  // 价格字段：优先用含税总价反算，否则用含税单价
   if (hasFormFieldPermission('unit_price')) {
     const hasUnitPrice = po.unit_price !== null && po.unit_price !== undefined && Number(po.unit_price) > 0
     const hasTotalPrice = po.total_price !== null && po.total_price !== undefined && Number(po.total_price) > 0
 
-    if (hasUnitPrice && hasTotalPrice) {
-      form.unit_price = Number(po.unit_price)
-      form.total_price = Number(po.total_price)
+    // 税率带过来
+    if (po.tax_rate != null) {
+      form.tax_rate = Number(po.tax_rate)
+    }
+
+    if (hasTotalPrice) {
+      // 优先: 含税总价 → 调用 post_total 逻辑反算单价
+      postTaxTotalInput.value = Number(po.total_price)
+      onPostTaxTotalChange(postTaxTotalInput.value)
     } else if (hasUnitPrice) {
-      form.unit_price = Number(po.unit_price)
-      form.total_price = Number((qty * form.unit_price).toFixed(2))
-    } else if (hasTotalPrice) {
-      form.total_price = Number(po.total_price)
-      form.unit_price = Number((form.total_price / qty).toFixed(4))
+      // 备选: 含税单价 → 反算不含税
+      form.post_tax_unit_price = Number(po.unit_price)
+      updatePrices('post')
     }
   }
   if (po.supplier_link) {