diff --git a/health-emergency/health-emergency-biz/src/main/java/com/renkang/emergency/api/service/impl/EmergencyApiServiceImpl.java b/health-emergency/health-emergency-biz/src/main/java/com/renkang/emergency/api/service/impl/EmergencyApiServiceImpl.java
index 0b52d6d..0034161 100644
--- a/health-emergency/health-emergency-biz/src/main/java/com/renkang/emergency/api/service/impl/EmergencyApiServiceImpl.java
+++ b/health-emergency/health-emergency-biz/src/main/java/com/renkang/emergency/api/service/impl/EmergencyApiServiceImpl.java
@@ -1400,7 +1400,6 @@ public class EmergencyApiServiceImpl implements EmergencyApiService {
         }
         AddGroupMemberDTO addGroupMemberDTO = new AddGroupMemberDTO();
         addGroupMemberDTO.setGroupId(dto.getGroupId());
-        addGroupMemberDTO.setFromAccount(loginUser.getId());
         addGroupMemberDTO.setMemberList(newMemberList.stream().map(userId -> {
             AddGroupMemberDTO.MemberListDTO memberListDTO = new AddGroupMemberDTO.MemberListDTO();
             memberListDTO.setMemberAccount(userId);
diff --git a/health-im/health-im-api/src/main/java/com/renkang/im/dto/AddGroupMemberDTO.java b/health-im/health-im-api/src/main/java/com/renkang/im/dto/AddGroupMemberDTO.java
index 9a51d5a..7bb39d2 100644
--- a/health-im/health-im-api/src/main/java/com/renkang/im/dto/AddGroupMemberDTO.java
+++ b/health-im/health-im-api/src/main/java/com/renkang/im/dto/AddGroupMemberDTO.java
@@ -40,13 +40,6 @@ public class AddGroupMemberDTO {
     @JsonProperty("MemberList")
     private List<MemberListDTO> memberList;
 
-    /**
-     * 发起邀请的用户ID（内部字段，不发送到腾讯IM）
-     * 设置后会使用该用户的 UserSig 调用 IM API，系统通知会显示该用户名
-     * 不设置则默认使用 administrator
-     */
-    private String fromAccount;
-
     @NoArgsConstructor
     @Data
     public static class MemberListDTO {
diff --git a/health-im/health-im-biz/src/main/java/com/renkang/im/util/TencentCloudImUtil.java b/health-im/health-im-biz/src/main/java/com/renkang/im/util/TencentCloudImUtil.java
index 04251e2..fe46454 100644
--- a/health-im/health-im-biz/src/main/java/com/renkang/im/util/TencentCloudImUtil.java
+++ b/health-im/health-im-biz/src/main/java/com/renkang/im/util/TencentCloudImUtil.java
@@ -114,18 +114,8 @@ public class TencentCloudImUtil {
      * 获取腾讯im请求路径
      */
     private String getHttpsUrl(String imServiceApi, Integer random) {
-        return getHttpsUrl(imServiceApi, random, APP_MANAGER);
-    }
-
-    /**
-     * 获取腾讯im请求路径（指定操作人）
-     *
-     * @param identifier 操作人账号，系统通知中会显示该用户名
-     */
-    private String getHttpsUrl(String imServiceApi, Integer random, String identifier) {
-        String userSig = tximUtil.genUserSig(identifier);
         return String.format("%s%s?sdkappid=%s&identifier=%s&usersig=%s&random=%s&contenttype=json",
-                HTTPS_URL_PREFIX, imServiceApi, sdkAppId, identifier, userSig, random);
+                HTTPS_URL_PREFIX, imServiceApi, sdkAppId, APP_MANAGER, this.getTxCloudUserSig(), random);
     }
 
 
@@ -576,22 +566,18 @@ public class TencentCloudImUtil {
                 importAccountsWithNames(accountList);
             }
 
-            // 如果指定了 fromAccount，则用该用户身份调用 API，系统通知会显示真实用户名
-            String identifier = StringUtils.isNotEmpty(dto.getFromAccount()) ? dto.getFromAccount() : APP_MANAGER;
-
             Integer random = RandomUtils.nextInt(0, 999999999);
-            String httpsUrl = getHttpsUrl(TencentCloudImApiConstant.GroupManage.ADD_GROUP_MEMBER, random, identifier);
+            String httpsUrl = getHttpsUrl(TencentCloudImApiConstant.GroupManage.ADD_GROUP_MEMBER, random);
             String jsonString = objectMapper.writeValueAsString(dto);
             JSONObject jsonObject = JSONObject.parseObject(jsonString);
-            // 移除内部字段，腾讯IM API 不接受
-            jsonObject.remove("fromAccount");
+            // 移除 memberName 字段，腾讯IM API 不接受此字段
             JSONArray memberList = jsonObject.getJSONArray("MemberList");
             if (memberList != null) {
                 for (int i = 0; i < memberList.size(); i++) {
                     memberList.getJSONObject(i).remove("memberName");
                 }
             }
-            log.info("腾讯云im添加群成员，identifier={}，请求参数：{}", identifier, jsonObject);
+            log.info("腾讯云im添加群成员，请求参数：{}", jsonObject);
             String result = HttpUtil.doPost(httpsUrl, jsonObject);
             log.info("腾讯云im添加群成员，返回结果：{}", result);
             return JSONObject.toJavaObject(JSONObject.parseObject(result), AddGroupMemberVO.class);