--- a/application/p/logic/FeedingHistory.php
+++ b/application/p/logic/FeedingHistory.php
@@ -29,7 +29,7 @@ class FeedingHistory
     public function add($params, $createBy) {
         try {
             $params['uuid'] = guid();
-            $params['create_by'] = $createBy;
+            $params['create_by'] = self::normalizeCreateBy($createBy, ltrim((string)\think\Config::get('database.type'), '\\') === \app\cores\database\Dm::class);
             $params['create_time'] = date("Y-m-d H:i:s");
             $res = $this->model->add($params);
             if(!$res) {
@@ -51,6 +51,11 @@ class FeedingHistory
      * @param $field
      * @return array
      */
+    private static function normalizeCreateBy(string $value, bool $isDm): string
+    {
+        return $isDm ? mb_substr($value, 0, 32, 'UTF-8') : $value;
+    }
+
     public function lists($where, $page, $page_size, $order, $field) {
         $data['rows'] = $this->model->inquiry($where, $page, $page_size, $order, $field);
         $data['total'] = $this->model->inquiryCount($where);
@@ -65,9 +70,25 @@ class FeedingHistory
      */
     public function info($uuid) {
         $info = $this->model->read($uuid);
+        if (is_array($info)) {
+            $info = self::normalizeReadCreateTime($info, ltrim((string)\think\Config::get('database.type'), '\\') === \app\cores\database\Dm::class);
+        }
         return ['code' => 0, 'message' => '', 'data' => $info];
     }
 
+    private static function normalizeReadCreateTime(array $row, bool $isDm): array
+    {
+        $value = $row['create_time'] ?? null;
+        if (!$isDm || !is_string($value) || !preg_match('/^(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2})\.\d{1,6}$/D', $value, $parts)) {
+            return $row;
+        }
+        $date = \DateTime::createFromFormat('!Y-m-d H:i:s', $parts[1]);
+        if ($date && substr($parts[1], 0, 4) !== '0000' && $date->format('Y-m-d H:i:s') === $parts[1]) {
+            $row['create_time'] = $parts[1];
+        }
+        return $row;
+    }
+
     /**
      * @电子档案--输送历史编辑
      * @author 李鑫
@@ -112,4 +133,4 @@ class FeedingHistory
         }
         return ['code' => 0, 'message' => '删除成功', 'data' => []];
     }
-}
\ No newline at end of file
+}