diff --git a/src/main/java/com/isu/gaswellwatch/service/impl/SummaryServiceImpl.java b/src/main/java/com/isu/gaswellwatch/service/impl/SummaryServiceImpl.java
index 9bab869..d97fa42 100644
--- a/src/main/java/com/isu/gaswellwatch/service/impl/SummaryServiceImpl.java
+++ b/src/main/java/com/isu/gaswellwatch/service/impl/SummaryServiceImpl.java
@@ -37,6 +37,34 @@ public class SummaryServiceImpl  implements SummaryService {
 //        onlineMap.put("2","false");
 //        onlineMap.put("3","true");
 //        onlineMap.put("4","true");
+        if(onlineMap.isEmpty()){
+            List<PieSummaryVO> result = new ArrayList<>();
+            PieSummaryVO pieSummaryVO = new PieSummaryVO();
+            pieSummaryVO.setChartName("total");
+            pieSummaryVO.setTitle("设备总数");
+            pieSummaryVO.setData(List.of());
+            result.add(pieSummaryVO);
+
+            PieSummaryVO pieSummaryVO1 = new PieSummaryVO();
+            pieSummaryVO1.setChartName(KNPCV1_MODBUS_TYPE);
+            pieSummaryVO1.setTitle("KNPCV1");
+            pieSummaryVO1.setData(List.of());
+            result.add(pieSummaryVO1);
+
+            PieSummaryVO pieSummaryVO2 = new PieSummaryVO();
+            pieSummaryVO2.setChartName(ETC_MODBUS_TYPE);
+            pieSummaryVO2.setTitle("ETC");
+            pieSummaryVO2.setData(List.of());
+            result.add(pieSummaryVO2);
+
+            PieSummaryVO pieSummaryVO3 = new PieSummaryVO();
+            pieSummaryVO3.setChartName(SCSS_MODBUS_TYPE);
+            pieSummaryVO3.setTitle("四川双晟");
+            pieSummaryVO3.setData(List.of());
+            result.add(pieSummaryVO3);
+
+            return result;
+        }
         List<Long> deviceIdList = onlineMap.keySet().stream().map(Long::parseLong).toList();
 
         List<DeviceVO> deviceVOList = deviceService.getDeviceVOByIds(deviceIdList);