diff --git a/src/core/types/user.ts b/src/core/types/user.ts
index 15ff201a..ed2cd129 100644
--- a/src/core/types/user.ts
+++ b/src/core/types/user.ts
@@ -239,7 +239,7 @@ export type UserV2 = UserDetailInfoListenerArg;
 export interface UserDetailInfoListenerArg {
     uid: string;
     uin: string;
-    simpleInfo: SimpleInfo;
+    simpleInfo?: SimpleInfo;
     commonExt?: CommonExt;
     photoWall?: PhotoWall;
 }
diff --git a/src/onebot/action/go-cqhttp/GetStrangerInfo.ts b/src/onebot/action/go-cqhttp/GetStrangerInfo.ts
index 9ffc719b..5c371b94 100644
--- a/src/onebot/action/go-cqhttp/GetStrangerInfo.ts
+++ b/src/onebot/action/go-cqhttp/GetStrangerInfo.ts
@@ -29,17 +29,17 @@ export default class GoCQHTTPGetStrangerInfo extends OneBotAction<Payload, OB11U
             user_id: parseInt(extendData.detail.uin) ?? 0,
             uid: info.uid ?? uid,
             nickname: extendData.detail.simpleInfo.coreInfo.nick ?? '',
-            age: extendData.detail.simpleInfo.baseInfo.age ?? info.simpleInfo.baseInfo.age,
+            age: extendData.detail.simpleInfo.baseInfo.age ?? info.simpleInfo?.baseInfo.age,
             qid: extendData.detail.simpleInfo.baseInfo.qid,
             qqLevel: calcQQLevel(extendData.detail.commonExt?.qqLevel ?? info.commonExt?.qqLevel),
             sex: OB11Construct.sex(extendData.detail.simpleInfo.baseInfo.sex) ?? OB11UserSex.unknown,
-            long_nick: extendData.detail.simpleInfo.baseInfo.longNick ?? info.simpleInfo.baseInfo.longNick,
+            long_nick: extendData.detail.simpleInfo.baseInfo.longNick ?? info.simpleInfo?.baseInfo.longNick,
             reg_time: extendData.detail.commonExt?.regTime ?? info.commonExt?.regTime,
             is_vip: extendData.detail.simpleInfo.vasInfo?.svipFlag,
             is_years_vip: extendData.detail.simpleInfo.vasInfo?.yearVipFlag,
             vip_level: extendData.detail.simpleInfo.vasInfo?.vipLevel,
-            remark: extendData.detail.simpleInfo.coreInfo.remark ?? info.simpleInfo.coreInfo.remark,
-            status: extendData.detail.simpleInfo.status?.status ?? info.simpleInfo.status?.status,
+            remark: extendData.detail.simpleInfo.coreInfo.remark ?? info.simpleInfo?.coreInfo.remark,
+            status: extendData.detail.simpleInfo.status?.status ?? info.simpleInfo?.status?.status,
             login_days: 0,//失效
         };
     }
diff --git a/src/onebot/action/go-cqhttp/SetQQProfile.ts b/src/onebot/action/go-cqhttp/SetQQProfile.ts
index 2f2cea96..30fd86ad 100644
--- a/src/onebot/action/go-cqhttp/SetQQProfile.ts
+++ b/src/onebot/action/go-cqhttp/SetQQProfile.ts
@@ -19,12 +19,12 @@ export class SetQQProfile extends OneBotAction<Payload, Awaited<ReturnType<NTQQU
         const OldProfile = await this.core.apis.UserApi.getUserDetailInfoV2(self.uid);
         return await this.core.apis.UserApi.modifySelfProfile({
             nick: payload.nickname,
-            longNick: (payload?.personal_note ?? OldProfile?.simpleInfo.baseInfo.longNick) || '',
-            sex: parseInt(payload?.sex ? payload?.sex.toString() : OldProfile?.simpleInfo.baseInfo.sex!.toString()),
+            longNick: (payload?.personal_note ?? OldProfile?.simpleInfo!.baseInfo.longNick) || '',
+            sex: parseInt(payload?.sex ? payload?.sex.toString() : OldProfile?.simpleInfo!.baseInfo.sex!.toString()),
             birthday: {
-                birthday_year: OldProfile?.simpleInfo.baseInfo.birthday_year!.toString(),
-                birthday_month: OldProfile?.simpleInfo.baseInfo.birthday_month!.toString(),
-                birthday_day: OldProfile?.simpleInfo.baseInfo.birthday_day!.toString(),
+                birthday_year: OldProfile?.simpleInfo!.baseInfo.birthday_year!.toString(),
+                birthday_month: OldProfile?.simpleInfo!.baseInfo.birthday_month!.toString(),
+                birthday_day: OldProfile?.simpleInfo!.baseInfo.birthday_day!.toString(),
             },
             location: undefined,
         });
diff --git a/src/onebot/action/group/GetGroupMemberList.ts b/src/onebot/action/group/GetGroupMemberList.ts
index e2256b5b..37543805 100644
--- a/src/onebot/action/group/GetGroupMemberList.ts
+++ b/src/onebot/action/group/GetGroupMemberList.ts
@@ -16,16 +16,35 @@ export class GetGroupMemberList extends OneBotAction<Payload, OB11GroupMember[]>
     override actionName = ActionName.GetGroupMemberList;
     override payloadSchema = SchemaData;
 
+    /**
+     * 处理获取群成员列表请求
+     */
     async _handle(payload: Payload) {
         const groupIdStr = payload.group_id.toString();
         const noCache = this.parseBoolean(payload.no_cache ?? false);
+
+        // 获取群成员基本信息
         const groupMembers = await this.getGroupMembers(groupIdStr, noCache);
-        const _groupMembers = await Promise.all(
-            Array.from(groupMembers.values()).map(async item =>
-                OB11Construct.groupMember(groupIdStr, item, await this.core.apis.UserApi.getUserDetailInfoV2(item.uin))
-            )
+        const memberArray = Array.from(groupMembers.values());
+
+        // 批量并行获取用户详情
+        const userDetailsPromises = memberArray.map(member =>
+            this.core.apis.UserApi.getUserDetailInfoV2(member.uin)
+                .catch(_ => {
+                    return { uin: member.uin, uid: member.uid };
+                })
         );
-        return Array.from(new Map(_groupMembers.map(member => [member.user_id, member])).values());
+        const userDetails = await Promise.all(userDetailsPromises);
+
+        // 并行构建 OneBot 格式的群成员数据
+        const groupMembersList = memberArray.map((member, index) => {
+            // 确保用户详情不会是undefined
+            const userDetail = userDetails[index] || { uin: member.uin, uid: member.uid };
+            return OB11Construct.groupMember(groupIdStr, member, userDetail);
+        });
+
+        // 直接返回处理后的成员列表，不进行去重
+        return groupMembersList;
     }
 
     private parseBoolean(value: boolean | string): boolean {
@@ -37,13 +56,18 @@ export class GetGroupMemberList extends OneBotAction<Payload, OB11GroupMember[]>
         let groupMembers = memberCache.get(groupIdStr);
 
         if (noCache || !groupMembers) {
-            const data = this.core.apis.GroupApi.refreshGroupMemberCache(groupIdStr, true).then().catch();
-            groupMembers = memberCache.get(groupIdStr) || (await data);
-            if (!groupMembers) {
-                throw new Error(`Failed to get group member list for group ${groupIdStr}`);
+            try {
+                const refreshPromise = this.core.apis.GroupApi.refreshGroupMemberCache(groupIdStr, true);
+
+                groupMembers = memberCache.get(groupIdStr) || (await refreshPromise);
+
+                if (!groupMembers) {
+                    throw new Error(`无法获取群 ${groupIdStr} 的成员列表`);
+                }
+            } catch (error) {
+                throw new Error(`获取群 ${groupIdStr} 成员列表失败: ${error instanceof Error ? error.message : String(error)}`);
             }
         }
-
         return groupMembers;
     }
 }
\ No newline at end of file
diff --git a/src/onebot/api/msg.ts b/src/onebot/api/msg.ts
index 7c7ca63f..41e12d18 100644
--- a/src/onebot/api/msg.ts
+++ b/src/onebot/api/msg.ts
@@ -445,7 +445,7 @@ export class OneBotMsgApi {
             const uid = await this.core.apis.UserApi.getUidByUinV2(`${atQQ}`);
             if (!uid) throw new Error('Get Uid Error');
             const info = await this.core.apis.UserApi.getUserDetailInfoV2(uid);
-            return at(atQQ, uid, NTMsgAtType.ATTYPEONE, info.simpleInfo.coreInfo.nick || '');
+            return at(atQQ, uid, NTMsgAtType.ATTYPEONE, info.simpleInfo?.coreInfo.nick || '');
         },
 
         [OB11MessageDataType.reply]: async ({ data: { id } }) => {
@@ -845,7 +845,7 @@ export class OneBotMsgApi {
                 return;
             }
         }
-        resMsg.sender.nickname = (await this.core.apis.UserApi.getUserDetailInfoV2(msg.senderUid)).simpleInfo.coreInfo.nick || '';
+        resMsg.sender.nickname = (await this.core.apis.UserApi.getUserDetailInfoV2(msg.senderUid)).simpleInfo?.coreInfo.nick || '';
     }
 
     private async handleTempGroupMessage(resMsg: OB11Message, msg: RawMessage) {
diff --git a/src/onebot/helper/data.ts b/src/onebot/helper/data.ts
index 05dff46c..58c1d11e 100644
--- a/src/onebot/helper/data.ts
+++ b/src/onebot/helper/data.ts
@@ -59,8 +59,8 @@ export class OB11Construct {
             user_id: +member.uin,
             nickname: member.nick,
             card: member.cardName,
-            sex: this.sex(info?.simpleInfo.baseInfo.sex),
-            age: info?.simpleInfo.baseInfo.age ?? 0,
+            sex: this.sex(info?.simpleInfo?.baseInfo.sex),
+            age: info?.simpleInfo?.baseInfo.age ?? 0,
             area: info?.commonExt?.address,
             level: member.memberRealLevel?.toString() ?? '0',
             qq_level: info?.commonExt?.qqLevel && calcQQLevel(info.commonExt.qqLevel) || 0,