diff --git a/src/core/apis/packet.ts b/src/core/apis/packet.ts
index fb930e95..5a4fa20d 100644
--- a/src/core/apis/packet.ts
+++ b/src/core/apis/packet.ts
@@ -86,7 +86,10 @@ export class NTQQPacketApi {
         const retData = new NapProtoMsg(OidbSvcTrpcTcp0X9067_202_Rsp_Body).decode(body);
         return retData.data.rkeyList;
     }
-
+    async sendGroupSignPacket(groupCode: string) {
+        const packet = this.packetSession?.packer.packGroupSignReq(this.core.selfInfo.uin, groupCode);
+        await this.sendPacket('OidbSvcTrpcTcp.0xeb7', packet!, true);
+    }
     async sendStatusPacket(uin: number): Promise<{ status: number; ext_status: number; } | undefined> {
         let status = 0;
         try {
diff --git a/src/core/packet/packer.ts b/src/core/packet/packer.ts
index cb53db5c..7d2bd942 100644
--- a/src/core/packet/packer.ts
+++ b/src/core/packet/packer.ts
@@ -18,6 +18,7 @@ import { OidbSvcTrpcTcp0x6D6 } from "@/core/packet/proto/oidb/Oidb.0x6D6";
 import { OidbSvcTrpcTcp0XE37_1200 } from "@/core/packet/proto/oidb/Oidb.0xE37_1200";
 import { PacketMsgConverter } from "@/core/packet/msg/converter";
 import { PacketClient } from "@/core/packet/client";
+import { OidbSvcTrpcTcp0XEB7 } from "./proto/oidb/Oidb.0xEB7";
 
 export type PacketHexStr = string & { readonly hexNya: unique symbol };
 
@@ -321,4 +322,17 @@ export class PacketPacker {
             })
         );
     }
+    packGroupSignReq(uin: string, groupCode: string): PacketHexStr {
+        return this.toHexStr(
+            this.packOidbPacket(0XEB7, 1, new NapProtoMsg(OidbSvcTrpcTcp0XEB7).encode(
+                {
+                    body: {
+                        uin: uin,
+                        groupUin: groupCode,
+                        version: "9.0.90"
+                    }
+                }
+            ), false, false)
+        );
+    }
 }
diff --git a/src/core/packet/proto/oidb/Oidb.0xEB7.ts b/src/core/packet/proto/oidb/Oidb.0xEB7.ts
new file mode 100644
index 00000000..b5543182
--- /dev/null
+++ b/src/core/packet/proto/oidb/Oidb.0xEB7.ts
@@ -0,0 +1,12 @@
+import { ScalarType } from "@protobuf-ts/runtime";
+import { ProtoField } from "../NapProto";
+
+export const OidbSvcTrpcTcp0XEB7_Body = {
+    uin: ProtoField(1, ScalarType.STRING),
+    groupUin: ProtoField(2, ScalarType.STRING),
+    version: ProtoField(3, ScalarType.STRING),
+};
+
+export const OidbSvcTrpcTcp0XEB7 = {
+    body: ProtoField(2, () => OidbSvcTrpcTcp0XEB7_Body),
+}
\ No newline at end of file
diff --git a/src/onebot/action/extends/SetGroupSign.ts b/src/onebot/action/extends/SetGroupSign.ts
new file mode 100644
index 00000000..9e87446b
--- /dev/null
+++ b/src/onebot/action/extends/SetGroupSign.ts
@@ -0,0 +1,22 @@
+import BaseAction from '../BaseAction';
+import { ActionName } from '../types';
+import { FromSchema, JSONSchema } from 'json-schema-to-ts';
+
+const SchemaData = {
+    type: 'object',
+    properties: {
+        group_id: { type: 'string' },
+    },
+    required: ['group_id'],
+} as const satisfies JSONSchema;
+
+type Payload = FromSchema<typeof SchemaData>;
+
+export class SetGroupSign extends BaseAction<Payload, any> {
+    actionName = ActionName.SetGroupSign;
+    payloadSchema = SchemaData;
+
+    async _handle(payload: Payload) {
+        return await this.core.apis.PacketApi.sendGroupSignPacket(payload.group_id);
+    }
+}
diff --git a/src/onebot/action/index.ts b/src/onebot/action/index.ts
index 331de2c3..a2cbf7ef 100644
--- a/src/onebot/action/index.ts
+++ b/src/onebot/action/index.ts
@@ -93,6 +93,7 @@ import { GetGroupFileUrl } from "@/onebot/action/file/GetGroupFileUrl";
 import { GetPacketStatus } from "@/onebot/action/packet/GetPacketStatus";
 import { FriendPoke } from "@/onebot/action/user/FriendPoke";
 import { GetCredentials } from './system/GetCredentials';
+import { SetGroupSign } from './extends/SetGroupSign';
 
 
 export type ActionMap = Map<string, BaseAction<any, any>>;
@@ -115,6 +116,7 @@ export function createActionMap(obContext: NapCatOneBot11Adapter, core: NapCatCo
         new SetQQAvatar(obContext, core),
         new TranslateEnWordToZn(obContext, core),
         new GetGroupRootFiles(obContext, core),
+        new SetGroupSign(obContext, core),
         // onebot11
         new SendLike(obContext, core),
         new GetMsg(obContext, core),
diff --git a/src/onebot/action/types.ts b/src/onebot/action/types.ts
index 509593b4..7ab3f71a 100644
--- a/src/onebot/action/types.ts
+++ b/src/onebot/action/types.ts
@@ -134,5 +134,7 @@ export enum ActionName {
     GetGuildProfile = 'get_guild_service_profile',
 
     GetGroupIgnoredNotifies = 'get_group_ignored_notifies',
+    
+    SetGroupSign = "set_group_sign",
     // UploadForwardMsg = "upload_forward_msg",
 }