diff --git a/openapi.json b/openapi.json
index 43c1eac..584f982 100644
--- a/openapi.json
+++ b/openapi.json
@@ -1,5 +1,5 @@
 {
-  "hash": "ce722f966bbb3c4eabd198291cd5cdc8eebf36391ba8eb0458d107822cfc8037",
+  "hash": "3c5196d98b6096d6dcb28beda5cf923b703ff18e399556d63feff0bbccf7038b",
   "openapi": "3.0.0",
   "paths": {
     "/hello": {
@@ -2353,6 +2353,14 @@
               "type": "string"
             }
           },
+          {
+            "name": "key",
+            "required": false,
+            "in": "query",
+            "schema": {
+              "type": "string"
+            }
+          },
           {
             "name": "_limit",
             "required": false,
@@ -2518,6 +2526,14 @@
               "type": "string"
             }
           },
+          {
+            "name": "key",
+            "required": false,
+            "in": "query",
+            "schema": {
+              "type": "string"
+            }
+          },
           {
             "name": "_limit",
             "required": false,
@@ -6807,6 +6823,9 @@
       "CreateSessionDto": {
         "type": "object",
         "properties": {
+          "key": {
+            "type": "string"
+          },
           "expireAt": {
             "format": "date-time",
             "type": "string",
@@ -7002,6 +7021,9 @@
           "remark": {
             "type": "string",
             "description": "备注"
+          },
+          "key": {
+            "type": "string"
           }
         }
       },
@@ -8428,6 +8450,9 @@
             "type": "string",
             "description": "备注"
           },
+          "key": {
+            "type": "string"
+          },
           "_limit": {
             "type": "number",
             "description": "分页大小"
diff --git a/src/session/dto/create-session.dto.ts b/src/session/dto/create-session.dto.ts
index eecc3ab..2d89fd3 100644
--- a/src/session/dto/create-session.dto.ts
+++ b/src/session/dto/create-session.dto.ts
@@ -1,5 +1,10 @@
 import { OmitType } from '@nestjs/swagger';
+import { IsOptional, IsString } from 'class-validator';
 
 import { SessionDoc } from '../entities/session.entity';
 
-export class CreateSessionDto extends OmitType(SessionDoc, ['key'] as const) {}
+export class CreateSessionDto extends OmitType(SessionDoc, ['key'] as const) {
+  @IsOptional()
+  @IsString()
+  key?: string;
+}
diff --git a/src/session/session.service.ts b/src/session/session.service.ts
index 70451f6..501520d 100644
--- a/src/session/session.service.ts
+++ b/src/session/session.service.ts
@@ -16,8 +16,9 @@ export class SessionService {
   constructor(@InjectModel(Session.name) private readonly sessionModel: Model<SessionDocument>) {}
 
   create(createDto: CreateSessionDto): Promise<SessionDocument> {
-    const key = nanoid();
-    const session = new this.sessionModel({ ...createDto, key });
+    const { key: customKey, ...rest } = createDto;
+    const key = customKey ?? nanoid();
+    const session = new this.sessionModel({ ...rest, key });
     return session.save();
   }