修复

app/Http/Services/LogService.php

@@ -7,6 +7,7 @@ use App\Http\Controllers\Filter\LogFilter;
 use App\Http\Transformers\LogTransformer;
 use App\Http\Transformers\SupplierTransformer;
 use App\Model\LogModel;
+use App\Model\NationModel;
 
 class LogService
 {
@@ -153,12 +154,18 @@ class LogService
             return $value;
         }, $oldSupplier);
         $diff = array_diff($newSupplier, $oldSupplier);
+        // 国家/地区映射（循环外获取，避免重复查库）
+        $nationMap = NationModel::getNationList();
         $result = [];
         foreach ($diff as $key => $item) {
             $columnMap = config('validate.SupplierNeedLogColumn');
             if (in_array($key, array_keys($columnMap))) {
                 $oldValue = array_get($oldSupplier, $key, '空');
                 $newValue = array_get($newSupplier, $key, '空');
+                if ($key === 'nation_id') {
+                    $oldValue = array_get($nationMap, $oldValue, '');
+                    $newValue = array_get($nationMap, $newValue, $newValue);
+                }
                 $content = array_get($columnMap, $key) . '由 [ ' . $oldValue . ' ] 改成 [ ' . $newValue . ' ];';
                 $result[] = $content;
             } else {

app/Http/Services/SupplierService.php

@@ -282,6 +282,9 @@ class SupplierService
 
                 $channel['system_tags'] = trim(implode(',', $channel['system_tags']), ',');
 
+                // 防御：禁止编辑时覆盖 supplier_source，防止被意外改为0
+                unset($channel['supplier_source']);
+
                 $model->where('supplier_id', $supplierId)->update($channel);
 
                 $supplierAddressService = new SupplierAddressService();
@@ -1423,4 +1426,4 @@ class SupplierService
 
         return $result;
     }
-}
+}
\ No newline at end of file