diff --git a/src/main/java/com/tailbet/controller/OpsController.java b/src/main/java/com/tailbet/controller/OpsController.java
index 2ca1b91..4a4f4b4 100644
--- a/src/main/java/com/tailbet/controller/OpsController.java
+++ b/src/main/java/com/tailbet/controller/OpsController.java
@@ -72,7 +72,7 @@ public class OpsController {
      * 拉入群
      */
     @PostMapping("/group/pull")
-    public R<Void> pullGroup(@RequestBody PullGroupDTO dto) {
+    public R<Void> pullGroup(@Valid @RequestBody PullGroupDTO dto) {
         Long operatorId = UserContext.getUserId();
         groupService.pullUser(dto.getGroupId(), dto.getUserId(), operatorId);
         return R.ok();
diff --git a/src/main/java/com/tailbet/model/dto/PullGroupDTO.java b/src/main/java/com/tailbet/model/dto/PullGroupDTO.java
index 02e9129..5e8ab67 100644
--- a/src/main/java/com/tailbet/model/dto/PullGroupDTO.java
+++ b/src/main/java/com/tailbet/model/dto/PullGroupDTO.java
@@ -1,5 +1,6 @@
 package com.tailbet.model.dto;
 
+import jakarta.validation.constraints.NotNull;
 import lombok.Data;
 
 /**
@@ -7,13 +8,16 @@ import lombok.Data;
  */
 @Data
 public class PullGroupDTO {
+
     /**
      * 用户ID
      */
+    @NotNull(message = "用户ID不能为空")
     private Long userId;
 
     /**
      * 群ID
      */
+    @NotNull(message = "群ID不能为空")
     private Long groupId;
 }
diff --git a/src/main/java/com/tailbet/model/vo/DigitTrialVo.java b/src/main/java/com/tailbet/model/vo/DigitTrialVo.java
index d78c32b..658d86f 100644
--- a/src/main/java/com/tailbet/model/vo/DigitTrialVo.java
+++ b/src/main/java/com/tailbet/model/vo/DigitTrialVo.java
@@ -7,9 +7,29 @@ import lombok.Data;
  */
 @Data
 public class DigitTrialVo {
+
+    /**
+     * 尾数（0-9）
+     */
     private int digit;
+
+    /**
+     * 玩法
+     */
     private String playWin;
+
+    /**
+     * 总投注次数
+     */
     private int totalBet;
+
+    /**
+     * 总奖励/赔付金额
+     */
     private long totalAward;
+
+    /**
+     * 净盈亏（totalAward - totalBet）
+     */
     private long profit;
 }
diff --git a/src/main/java/com/tailbet/service/impl/GroupServiceImpl.java b/src/main/java/com/tailbet/service/impl/GroupServiceImpl.java
index 8c05862..2b4606c 100644
--- a/src/main/java/com/tailbet/service/impl/GroupServiceImpl.java
+++ b/src/main/java/com/tailbet/service/impl/GroupServiceImpl.java
@@ -204,6 +204,9 @@ public class GroupServiceImpl implements IGroupService {
         member.setUpdateTime(LocalDateTime.now());
         groupMemberMapper.insert(member);
 
+        // OpenIM 侧邀请用户入群
+        openIMApiClient.inviteUserToGroup(String.valueOf(groupId), List.of(String.valueOf(userId)));
+
         // 审计日志
         auditService.log(groupId, null, operatorId, "PULL_USER",
                 String.format("{\"userId\":%d}", userId));