diff --git a/backend/src/main/java/io/metersphere/notice/domain/Receiver.java b/backend/src/main/java/io/metersphere/notice/domain/Receiver.java
index 3a35704509..ea8d225588 100644
--- a/backend/src/main/java/io/metersphere/notice/domain/Receiver.java
+++ b/backend/src/main/java/io/metersphere/notice/domain/Receiver.java
@@ -2,9 +2,11 @@ package io.metersphere.notice.domain;
 
 import lombok.AllArgsConstructor;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 
 @Data
 @AllArgsConstructor
+@EqualsAndHashCode
 public class Receiver {
     private String userId;
     private String type;
diff --git a/backend/src/main/java/io/metersphere/notice/sender/AbstractNoticeSender.java b/backend/src/main/java/io/metersphere/notice/sender/AbstractNoticeSender.java
index 9436ee6f7b..9f7f5980c0 100644
--- a/backend/src/main/java/io/metersphere/notice/sender/AbstractNoticeSender.java
+++ b/backend/src/main/java/io/metersphere/notice/sender/AbstractNoticeSender.java
@@ -17,6 +17,7 @@ import java.io.IOException;
 import java.net.URL;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
@@ -127,16 +128,15 @@ public abstract class AbstractNoticeSender implements NoticeSender {
                     break;
                 case NoticeConstants.RelatedUser.CREATOR:
                     Object creator = paramMap.get("creator");
+                    Object createUser = paramMap.get("createUser");
+                    Object userId1 = paramMap.get("userId");
+
                     if (creator != null) {
                         toUsers.add(new Receiver(creator.toString(), NotificationConstants.Type.SYSTEM_NOTICE.name()));
-                    }
-                    Object createUser = paramMap.get("createUser");
-                    if (createUser != null) {
-                        toUsers.add(new Receiver(createUser.toString(), NotificationConstants.Type.SYSTEM_NOTICE.name()));
-                    }
-                    createUser = paramMap.get("userId");
-                    if (createUser != null) {
+                    } else if (createUser != null) {
                         toUsers.add(new Receiver(createUser.toString(), NotificationConstants.Type.SYSTEM_NOTICE.name()));
+                    } else if (userId1 != null) {
+                        toUsers.add(new Receiver(userId1.toString(), NotificationConstants.Type.SYSTEM_NOTICE.name()));
                     }
                     break;
                 case NoticeConstants.RelatedUser.MAINTAINER:
@@ -161,6 +161,8 @@ public abstract class AbstractNoticeSender implements NoticeSender {
         }
         // 排除自己
         toUsers.removeIf(u -> StringUtils.equals(u.getUserId(), noticeModel.getOperator()));
-        return toUsers;
+        // 去重复
+        HashSet<Receiver> receivers = new HashSet<>(toUsers);
+        return new ArrayList<>(receivers);
     }
 }
diff --git a/backend/src/main/java/io/metersphere/notice/sender/impl/DingNoticeSender.java b/backend/src/main/java/io/metersphere/notice/sender/impl/DingNoticeSender.java
index 04393fdeff..04d401f5ea 100644
--- a/backend/src/main/java/io/metersphere/notice/sender/impl/DingNoticeSender.java
+++ b/backend/src/main/java/io/metersphere/notice/sender/impl/DingNoticeSender.java
@@ -30,7 +30,10 @@ public class DingNoticeSender extends AbstractNoticeSender {
         text.setContent(context);
         request.setText(text);
         OapiRobotSendRequest.At at = new OapiRobotSendRequest.At();
-        List<String> phoneList = super.getUserPhones(noticeModel, receivers.stream().map(Receiver::getUserId).collect(Collectors.toList()));
+        List<String> phoneList = super.getUserPhones(noticeModel, receivers.stream()
+                .map(Receiver::getUserId)
+                .distinct()
+                .collect(Collectors.toList()));
         LogUtil.info("收件人地址: " + phoneList);
         at.setAtMobiles(phoneList);
         request.setAt(at);
diff --git a/backend/src/main/java/io/metersphere/notice/sender/impl/MailNoticeSender.java b/backend/src/main/java/io/metersphere/notice/sender/impl/MailNoticeSender.java
index 2eb6384a80..f92896c31f 100644
--- a/backend/src/main/java/io/metersphere/notice/sender/impl/MailNoticeSender.java
+++ b/backend/src/main/java/io/metersphere/notice/sender/impl/MailNoticeSender.java
@@ -37,7 +37,10 @@ public class MailNoticeSender extends AbstractNoticeSender {
         LogUtil.info("发件人地址" + javaMailSender.getUsername());
         LogUtil.info("helper" + helper);
         helper.setSubject("MeterSphere " + noticeModel.getSubject());
-        List<String> userIds = noticeModel.getReceivers().stream().map(Receiver::getUserId).collect(Collectors.toList());
+        List<String> userIds = noticeModel.getReceivers().stream()
+                .map(Receiver::getUserId)
+                .distinct()
+                .collect(Collectors.toList());
         List<String> emails = super.getUserEmails(noticeModel, userIds);
         String[] users = emails.toArray(new String[0]);
         LogUtil.info("收件人地址: " + emails);
diff --git a/backend/src/main/java/io/metersphere/notice/sender/impl/WeComNoticeSender.java b/backend/src/main/java/io/metersphere/notice/sender/impl/WeComNoticeSender.java
index e04806c644..bb7dd07f84 100644
--- a/backend/src/main/java/io/metersphere/notice/sender/impl/WeComNoticeSender.java
+++ b/backend/src/main/java/io/metersphere/notice/sender/impl/WeComNoticeSender.java
@@ -24,7 +24,10 @@ public class WeComNoticeSender extends AbstractNoticeSender {
             return;
         }
         TextMessage message = new TextMessage(context);
-        List<String> phoneLists = super.getUserPhones(noticeModel, receivers.stream().map(Receiver::getUserId).collect(Collectors.toList()));
+        List<String> phoneLists = super.getUserPhones(noticeModel, receivers.stream()
+                .map(Receiver::getUserId)
+                .distinct()
+                .collect(Collectors.toList()));
         message.setMentionedMobileList(phoneLists);
         try {
             WxChatbotClient.send(messageDetail.getWebhook(), message);