diff --git a/hinghwa-dict-backend/word/character/views.py b/hinghwa-dict-backend/word/character/views.py
index a3d9f159..a995f339 100644
--- a/hinghwa-dict-backend/word/character/views.py
+++ b/hinghwa-dict-backend/word/character/views.py
@@ -117,6 +117,12 @@ def searchCharactersPinyin(request):
                 result1[pinyin]["characters"].append(
                     {"character": character, "word": word, "traditional": traditional}
                 )
+                unique_result = []
+                exist_set = set()
+                for item in result1.values():
+                    if item["pinyin"] not in exist_set:
+                        unique_result.append(item)
+                        exist_set.add(item["pinyin"])
             return JsonResponse({"result": list(result1.values())}, status=200)
         else:
             return JsonResponse({}, status=405)
diff --git a/hinghwa-dict-backend/word/migrations/0005_listadmin.py b/hinghwa-dict-backend/word/migrations/0005_listadmin.py
deleted file mode 100644
index 7466a2d9..00000000
--- a/hinghwa-dict-backend/word/migrations/0005_listadmin.py
+++ /dev/null
@@ -1,16 +0,0 @@
-# Generated by Django 3.1.14 on 2023-09-16 08:49
-
-from django.db import migrations
-
-
-class Migration(migrations.Migration):
-    dependencies = [
-        ("word", "0004_word_list"),
-    ]
-
-    operations = [
-        migrations.AlterModelOptions(
-            name="list",
-            options={"verbose_name": "词单", "verbose_name_plural": "词单"},
-        ),
-    ]