diff --git a/cs-harmonic/cs-harmonic-boot/src/main/java/com/njcn/csharmonic/service/impl/StableDataServiceImpl.java b/cs-harmonic/cs-harmonic-boot/src/main/java/com/njcn/csharmonic/service/impl/StableDataServiceImpl.java
index a2f7ee5..6ecc845 100644
--- a/cs-harmonic/cs-harmonic-boot/src/main/java/com/njcn/csharmonic/service/impl/StableDataServiceImpl.java
+++ b/cs-harmonic/cs-harmonic-boot/src/main/java/com/njcn/csharmonic/service/impl/StableDataServiceImpl.java
@@ -36,6 +36,7 @@ import lombok.RequiredArgsConstructor;
 import org.influxdb.dto.QueryResult;
 import org.springframework.beans.BeanUtils;
 import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
 
 import java.text.DecimalFormat;
 import java.time.ZoneId;
@@ -273,7 +274,11 @@ public class StableDataServiceImpl implements StableDataService {
             List<CsLinePO> finalCsLinePOList = csLinePOList;
             data.forEach(epdPqd->{
             String frequency = Optional.ofNullable(commonStatisticalQueryParam.getFrequency()).orElse("");
-
+            if(StringUtils.isEmpty(commonStatisticalQueryParam.getFrequency())){
+                frequency ="";
+            }else {
+                frequency = "_"+commonStatisticalQueryParam.getFrequency();
+            }
             String finalFrequency1 = frequency;
             List<CommonQueryParam> commonQueryParams = csLinePOList1.stream().map(temp -> {
                 CommonQueryParam commonQueryParam = new CommonQueryParam();