diff --git a/apps/application/migrations/0005_alter_chat_abstract_alter_chatrecord_answer_text.py b/apps/application/migrations/0005_alter_chat_abstract_alter_chatrecord_answer_text.py
new file mode 100644
index 000000000..0643a39ce
--- /dev/null
+++ b/apps/application/migrations/0005_alter_chat_abstract_alter_chatrecord_answer_text.py
@@ -0,0 +1,23 @@
+# Generated by Django 4.1.13 on 2024-04-29 13:33
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('application', '0004_applicationaccesstoken_show_source'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='chat',
+            name='abstract',
+            field=models.CharField(max_length=1024, verbose_name='摘要'),
+        ),
+        migrations.AlterField(
+            model_name='chatrecord',
+            name='answer_text',
+            field=models.CharField(max_length=40960, verbose_name='答案'),
+        ),
+    ]
diff --git a/apps/application/models/application.py b/apps/application/models/application.py
index 774e1bdc2..6c77937bd 100644
--- a/apps/application/models/application.py
+++ b/apps/application/models/application.py
@@ -73,7 +73,7 @@ class ApplicationDatasetMapping(AppModelMixin):
 class Chat(AppModelMixin):
     id = models.UUIDField(primary_key=True, max_length=128, default=uuid.uuid1, editable=False, verbose_name="主键id")
     application = models.ForeignKey(Application, on_delete=models.CASCADE)
-    abstract = models.CharField(max_length=256, verbose_name="摘要")
+    abstract = models.CharField(max_length=1024, verbose_name="摘要")
     client_id = models.UUIDField(verbose_name="客户端id", default=None, null=True)
 
     class Meta:
@@ -96,7 +96,7 @@ class ChatRecord(AppModelMixin):
     vote_status = models.CharField(verbose_name='投票', max_length=10, choices=VoteChoices.choices,
                                    default=VoteChoices.UN_VOTE)
     problem_text = models.CharField(max_length=1024, verbose_name="问题")
-    answer_text = models.CharField(max_length=4096, verbose_name="答案")
+    answer_text = models.CharField(max_length=40960, verbose_name="答案")
     message_tokens = models.IntegerField(verbose_name="请求token数量", default=0)
     answer_tokens = models.IntegerField(verbose_name="响应token数量", default=0)
     const = models.IntegerField(verbose_name="总费用", default=0)
diff --git a/apps/application/serializers/chat_message_serializers.py b/apps/application/serializers/chat_message_serializers.py
index 3f45a934d..f8c80a865 100644
--- a/apps/application/serializers/chat_message_serializers.py
+++ b/apps/application/serializers/chat_message_serializers.py
@@ -138,7 +138,7 @@ def get_post_handler(chat_info: ChatInfo):
 
 class ChatMessageSerializer(serializers.Serializer):
     chat_id = serializers.UUIDField(required=True, error_messages=ErrMessage.char("对话id"))
-    message = serializers.CharField(required=True, error_messages=ErrMessage.char("用户问题"))
+    message = serializers.CharField(required=True, error_messages=ErrMessage.char("用户问题"), max_length=1024)
     stream = serializers.BooleanField(required=True, error_messages=ErrMessage.char("是否流式回答"))
     re_chat = serializers.BooleanField(required=True, error_messages=ErrMessage.char("是否重新回答"))
     application_id = serializers.UUIDField(required=False, allow_null=True, error_messages=ErrMessage.uuid("应用id"))