diff --git a/src/onebot11/constructor.ts b/src/onebot11/constructor.ts
index d545c917..a8a0fd62 100644
--- a/src/onebot11/constructor.ts
+++ b/src/onebot11/constructor.ts
@@ -487,7 +487,7 @@ export class OB11Constructor {
           }
           if (grayTipElement.jsonGrayTipElement.busiId == 2401) {
             let searchParams = new URL(json[0].jp).searchParams;
-            let msgSeq = searchParams.get('msgSeq');
+            let msgSeq = searchParams.get('msgSeq')!;
             let Group = searchParams.get('groupCode');
             let Businessid = searchParams.get('businessid');
             let Peer: Peer = {
@@ -495,7 +495,8 @@ export class OB11Constructor {
               chatType: ChatType.group,
               peerUid: Group!
             };
-            return new OB11GroupEssenceEvent(parseInt(msg.peerUid), msg.id!);
+            let msgData = await NTQQMsgApi.getMsgsBySeqAndCount(Peer, msgSeq.toString(), 1, true, true);
+            return new OB11GroupEssenceEvent(parseInt(msg.peerUid), msg.id!, parseInt(msgData.msgList[0].senderUin));
             // 获取MsgSeq+Peer可获取具体消息
           }
           if (grayTipElement.jsonGrayTipElement.busiId == 2407) {
diff --git a/src/onebot11/event/notice/OB11GroupEssenceEvent.ts b/src/onebot11/event/notice/OB11GroupEssenceEvent.ts
index d70ad4e9..4a4bf195 100644
--- a/src/onebot11/event/notice/OB11GroupEssenceEvent.ts
+++ b/src/onebot11/event/notice/OB11GroupEssenceEvent.ts
@@ -2,11 +2,13 @@ import { OB11GroupNoticeEvent } from './OB11GroupNoticeEvent';
 export class OB11GroupEssenceEvent extends OB11GroupNoticeEvent {
     notice_type = 'essence';
     message_id: number;
+    sender_id: number;
     sub_type: 'add' | 'delete' = "add";
 
-    constructor(groupId: number, message_id: number) {
+    constructor(groupId: number, message_id: number, sender_id: number) {
         super();
         this.group_id = groupId;
         this.message_id = message_id;
+        this.sender_id = sender_id;
     }
 }