diff --git a/Laravel/app/Http/Controllers/API/Third/CSharpController.php b/Laravel/app/Http/Controllers/API/Third/CSharpController.php
index 86c0d3d..5fd010f 100644
--- a/Laravel/app/Http/Controllers/API/Third/CSharpController.php
+++ b/Laravel/app/Http/Controllers/API/Third/CSharpController.php
@@ -205,6 +205,21 @@ public function SaveApply($orderNo)
             if ($entrust->user_sex == 1) $sex = 'M';
             if ($entrust->user_sex == 2) $sex = 'F';
             $hisiteminfo = collect($hisInfo['itemList']??[])->firstWhere('termCode', $entrust->entrust_code);
+
+            // 获取顶级科室名称
+            $deptName = '';
+            if (!empty($entrust->department_id)) {
+                $execDept = DB::table('s_department')->where('id', $entrust->department_id)->where('is_del', 0)->first();
+                if ($execDept) {
+                    if ($execDept->pid == 0) {
+                        $deptName = $execDept->department_name;
+                    } else {
+                        $topDept = DB::table('s_department')->where('id', $execDept->pid)->where('is_del', 0)->first();
+                        $deptName = $topDept->department_name ?? '';
+                    }
+                }
+            }
+
             $send_data = [
                 'Request' => [
                     'Head' => [
@@ -257,7 +272,7 @@ public function SaveApply($orderNo)
                                         'appoint_date' => $entrust->reservation_date . ' ' . substr($reservation_time, 0, 5),
                                         'register_date' => $entrust->reservation_date . ' ' . substr($reservation_end_time, 0, 5),
                                         'bodypartexamined' => $hisiteminfo['examPosiSmallName']??'',
-                                        'dept_name' => '',
+                                        'dept_name' => $deptName,
                                         'studyclass1' => $hisInfo['requestTypeAlias']??'',
                                         'studyclass1his' => $hisiteminfo['execDeptName']??'',
                                         'studyclass1name' => $hisiteminfo['execDeptName']??'',