diff --git a/apps/ofm/models.py b/apps/ofm/models.py
index 2814e9a6..f22a132e 100644
--- a/apps/ofm/models.py
+++ b/apps/ofm/models.py
@@ -148,19 +148,16 @@ class Publicity(CommonBDModel):
     # 记录编号自动生成
     def save(self, *args, **kwargs):
         if not self.number:
-            with transaction.atomic():
-                # 加行锁，防止并发取到相同 last_number
-                last_number = self.__class__.objects.select_for_update(skip_locked=True).order_by('-id').first() # skip_locked 锁定行，避免并发冲突
-                if last_number:
-                    try:
-                        last_num = int(last_number.number.split('-')[-1])
-                    except ValueError:
-                        last_num = 0
-                    new_num= last_num + 1
-                else:
-                    new_num = 1
-                # 格式化编号，带补零
-                self.number = f"(GXKG-{datetime.now().year}-{new_num:02d})"
+            last_number = self.__class__.objects.filter(number__startswith=f"(GXKG-{datetime.now().year}-)").order_by('-id').first()
+            if last_number:
+                try:
+                    last_num = int(last_number.number.split('-')[-1])
+                except ValueError:
+                    last_num = 0
+            else:
+                last_num =0
+            # 格式化编号，带补零
+            self.number = f"(GXKG-{datetime.now().year}-{last_num+1:02d})"
         super().save(*args, **kwargs)