diff --git a/epmet-module/data-statistical/data-statistical-server/src/main/java/com/epmet/service/evaluationindex/indexcal/impl/GridCorreLationServiceImpl.java b/epmet-module/data-statistical/data-statistical-server/src/main/java/com/epmet/service/evaluationindex/indexcal/impl/GridCorreLationServiceImpl.java
index be8016783d..2a71c3e8d3 100644
--- a/epmet-module/data-statistical/data-statistical-server/src/main/java/com/epmet/service/evaluationindex/indexcal/impl/GridCorreLationServiceImpl.java
+++ b/epmet-module/data-statistical/data-statistical-server/src/main/java/com/epmet/service/evaluationindex/indexcal/impl/GridCorreLationServiceImpl.java
@@ -327,6 +327,10 @@ public class GridCorreLationServiceImpl implements GridCorreLationService {
             result.setAvgValue(new BigDecimal(0));
             result.setSampleCount(0);
         }
+
+        if (result.getAvgValue() == null) {
+            result.setAvgValue(new BigDecimal(NumConstant.ZERO));
+        }
         //FOR TEST
         /*BigDecimal result=null;
         if(IndexCalConstant.S1_C1_G1.equals(gridId)){
@@ -354,6 +358,9 @@ public class GridCorreLationServiceImpl implements GridCorreLationService {
             result.setSampleCount(0);
             result.setAvgValue(new BigDecimal(0));
         }
+        if (result.getAvgValue() == null) {
+            result.setAvgValue(new BigDecimal(NumConstant.ZERO));
+        }
         //FOR TEST
         /*BigDecimal result=null;
         if(IndexCalConstant.S1_C1_G1.equals(gridId)){