diff --git a/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/api/impl/WxMaLiveMemberServiceImpl.java b/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/api/impl/WxMaLiveMemberServiceImpl.java
index 568630466..065b401fe 100644
--- a/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/api/impl/WxMaLiveMemberServiceImpl.java
+++ b/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/api/impl/WxMaLiveMemberServiceImpl.java
@@ -3,12 +3,16 @@ package cn.binarywang.wx.miniapp.api.impl;
 import cn.binarywang.wx.miniapp.api.WxMaLiveMemberService;
 import cn.binarywang.wx.miniapp.api.WxMaService;
 import cn.binarywang.wx.miniapp.constant.WxMaApiUrlConstants.Broadcast.Role;
+import com.google.common.base.Joiner;
 import com.google.gson.JsonArray;
 import lombok.RequiredArgsConstructor;
 import me.chanjar.weixin.common.error.WxErrorException;
 import me.chanjar.weixin.common.util.json.GsonHelper;
 import me.chanjar.weixin.common.util.json.GsonParser;
 
+import java.util.HashMap;
+import java.util.Map;
+
 import static cn.binarywang.wx.miniapp.constant.WxMaApiUrlConstants.Broadcast.Role.LIST_BY_ROLE;
 
 /**
@@ -35,8 +39,12 @@ public class WxMaLiveMemberServiceImpl implements WxMaLiveMemberService {
 
   @Override
   public JsonArray listByRole(Integer role, Integer offset, Integer limit, String keyword) throws WxErrorException {
-    final String response = this.service.get(LIST_BY_ROLE, GsonHelper.buildJsonObject("role", role, "offset", offset,
-      "limit", limit, "keyword", keyword).toString());
+    Map<String, Object> params = new HashMap<>(8);
+    params.put("role", role);
+    params.put("offset", offset);
+    params.put("limit", limit);
+    params.put("keyword", keyword);
+    final String response = this.service.get(LIST_BY_ROLE, Joiner.on("&").withKeyValueSeparator("=").join(params));
     return GsonParser.parse(response).getAsJsonArray("list");
   }
 }