diff --git a/im-center-server/src/main/java/cn/axzo/im/group/GroupProps.java b/im-center-server/src/main/java/cn/axzo/im/group/GroupProps.java
index 77ad054..e026657 100644
--- a/im-center-server/src/main/java/cn/axzo/im/group/GroupProps.java
+++ b/im-center-server/src/main/java/cn/axzo/im/group/GroupProps.java
@@ -1,6 +1,7 @@
 package cn.axzo.im.group;
 
 import com.alibaba.fastjson.JSON;
+import lombok.Getter;
 import lombok.Setter;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.cloud.context.config.annotation.RefreshScope;
@@ -10,13 +11,14 @@ import org.springframework.context.annotation.Configuration;
  * @author yanglin
  */
 @Setter
+@Getter
 @RefreshScope
 @Configuration
 @ConfigurationProperties(prefix = "im-group")
 public class GroupProps {
 
-    public int defaultMemberLimit = 499;
-    public int syncMessageTps = 20;
+    private int defaultMemberLimit = 499;
+    private int syncMessageTps = 20;
 
     @Override
     public String toString() {
diff --git a/im-center-server/src/main/java/cn/axzo/im/group/GroupSupport.java b/im-center-server/src/main/java/cn/axzo/im/group/GroupSupport.java
index d3e7012..b7929bd 100644
--- a/im-center-server/src/main/java/cn/axzo/im/group/GroupSupport.java
+++ b/im-center-server/src/main/java/cn/axzo/im/group/GroupSupport.java
@@ -38,7 +38,8 @@ public class GroupSupport implements GroupLogger {
         group.setAvatar(request.getAvatar());
         group.setMemberCount((long) request.getOwnerAndMembers().size());
         Long memberLimit = request.getMemberLimit();
-        group.setMemberLimit(memberLimit == null ? groupProps.defaultMemberLimit : memberLimit);
+        group.setMemberLimit(memberLimit == null
+                ? groupProps.getDefaultMemberLimit() : memberLimit);
         group.setOwnerAccount(owner);
         group.setOwnerPersonId(request.getOwner().personIdAsLong());
         group.setCreatePersonId(request.getOwner().personIdAsLong());
diff --git a/im-center-server/src/main/java/cn/axzo/im/group/message/GroupMessageSyncJob.java b/im-center-server/src/main/java/cn/axzo/im/group/message/GroupMessageSyncJob.java
index 3193f68..6f42d88 100644
--- a/im-center-server/src/main/java/cn/axzo/im/group/message/GroupMessageSyncJob.java
+++ b/im-center-server/src/main/java/cn/axzo/im/group/message/GroupMessageSyncJob.java
@@ -125,7 +125,7 @@ public class GroupMessageSyncJob implements InitializingBean {
 
     @Override
     public void afterPropertiesSet() {
-        tps = groupProps.syncMessageTps;
+        tps = groupProps.getSyncMessageTps();
         executor = Executors.newFixedThreadPool(
                 tps + 1, new NamedThreadFactory(GroupMessageSyncJob.class.getName()));
     }