diff --git a/pqs-harmonic/harmonic-boot/src/main/java/com/njcn/harmonic/mapper/majornetwork/mapping/RStatSubstationMMapper.xml b/pqs-harmonic/harmonic-boot/src/main/java/com/njcn/harmonic/mapper/majornetwork/mapping/RStatSubstationMMapper.xml
index 471227221..54e20bb58 100644
--- a/pqs-harmonic/harmonic-boot/src/main/java/com/njcn/harmonic/mapper/majornetwork/mapping/RStatSubstationMMapper.xml
+++ b/pqs-harmonic/harmonic-boot/src/main/java/com/njcn/harmonic/mapper/majornetwork/mapping/RStatSubstationMMapper.xml
@@ -84,14 +84,14 @@
         SELECT
             substation_id,
             effective_measurement_accrued,
-            ROUND(freq_over_day / freq_count,2) AS 'freqAverageOverDay',
-            ROUND(v_dev_over_day / v_dev_count,2) AS 'vDevAverageOverDay',
-            ROUND(v_over_day / v_count,2) AS 'vAverageOverDay',
-            ROUND(i_over_day / i_count,2) AS 'iAverageOverDay',
-            ROUND(unbalance_over_day / unbalance_count,2) AS 'unbalanceAverageOverDay',
-            ROUND(i_neg_over_day / i_neg_count,2) AS 'iNegAverageOverDay',
-            ROUND(flicker_over_day / flicker_count,2) AS 'flickerAverageOverDay',
-            ROUND(inuharm_over_day / inuharm_count,2) AS 'inuharmAverageOverDay'
+            IFNULL( ROUND( freq_over_day / freq_count, 2 ), 0 ) AS 'freqAverageOverDay',
+            IFNULL( ROUND( v_dev_over_day / v_dev_count, 2 ), 0 ) AS 'vDevAverageOverDay',
+            IFNULL( ROUND( v_over_day / v_count, 2 ), 0 ) AS 'vAverageOverDay',
+            IFNULL( ROUND( i_over_day / i_count, 2 ), 0 ) AS 'iAverageOverDay',
+            IFNULL( ROUND( unbalance_over_day / unbalance_count, 2 ), 0 ) AS 'unbalanceAverageOverDay',
+            IFNULL( ROUND( i_neg_over_day / i_neg_count, 2 ), 0 ) AS 'iNegAverageOverDay',
+            IFNULL( ROUND( flicker_over_day / flicker_count, 2 ), 0 ) AS 'flickerAverageOverDay',
+            IFNULL( ROUND( inuharm_over_day / inuharm_count, 2 ), 0 ) AS 'inuharmAverageOverDay'
         FROM
             r_stat_substation_m
         <where>