diff --git a/pqs-harmonic/harmonic-boot/src/main/java/com/njcn/harmonic/mapper/mapping/RStatLimitRateDMapper.xml b/pqs-harmonic/harmonic-boot/src/main/java/com/njcn/harmonic/mapper/mapping/RStatLimitRateDMapper.xml
index d1b61afd1..570467674 100644
--- a/pqs-harmonic/harmonic-boot/src/main/java/com/njcn/harmonic/mapper/mapping/RStatLimitRateDMapper.xml
+++ b/pqs-harmonic/harmonic-boot/src/main/java/com/njcn/harmonic/mapper/mapping/RStatLimitRateDMapper.xml
@@ -186,10 +186,13 @@
     <select id="getPercentages" resultType="com.njcn.harmonic.pojo.vo.MonitorOverLimitVO$DataVO">
         SELECT
         DATE_FORMAT(time_id,'%Y-%m-%d') AS time,
-        IFNULL(TRUNCATE ((1- (
+        NVL(TRUNCATE(
+        CASE
+        WHEN SUM(all_time) = 0 THEN 0
+        ELSE (1 - (
         sum( flicker_overtime )+ sum( flicker_all_time )+ sum( freq_dev_overtime )+ sum( voltage_dev_overtime )+ sum( ubalance_overtime )+ sum( uaberrance_overtime )+ sum( i_neg_overtime )+ sum( uharm_2_overtime )+ sum( uharm_3_overtime )+ sum( uharm_4_overtime )+ sum( uharm_5_overtime )+ sum( uharm_6_overtime )+ sum( uharm_7_overtime )+ sum( uharm_8_overtime )+ sum( uharm_9_overtime )+ sum( uharm_10_overtime )+ sum( uharm_11_overtime )+ sum( uharm_12_overtime )+ sum( uharm_13_overtime )+ sum( uharm_14_overtime )+ sum( uharm_15_overtime )+ sum( uharm_16_overtime )+ sum( uharm_17_overtime )+ sum( uharm_18_overtime )+ sum( uharm_19_overtime )+ sum( uharm_20_overtime )+ sum( uharm_21_overtime )+ sum( uharm_22_overtime )+ sum( uharm_23_overtime )+ sum( uharm_24_overtime )+ sum( uharm_25_overtime )+ sum( iharm_2_overtime )+ sum( iharm_3_overtime )+ sum( iharm_4_overtime )+ sum( iharm_5_overtime )+ sum( iharm_6_overtime )+ sum( iharm_7_overtime )+ sum( iharm_8_overtime )+ sum( iharm_9_overtime )+ sum( iharm_10_overtime )+ sum( iharm_11_overtime )+ sum( iharm_12_overtime )+ sum( iharm_13_overtime )+ sum( iharm_14_overtime )+ sum( iharm_15_overtime )+ sum( iharm_16_overtime )+ sum( iharm_17_overtime )+ sum( iharm_18_overtime )+ sum( iharm_19_overtime )+ sum( iharm_20_overtime )+ sum( iharm_21_overtime )+ sum( iharm_22_overtime )+ sum( iharm_23_overtime )+ sum( iharm_24_overtime )+ sum( iharm_25_overtime )+ sum( inuharm_1_overtime )+ sum( inuharm_2_overtime )+ sum( inuharm_3_overtime )+ sum( inuharm_4_overtime )+ sum( inuharm_5_overtime )+ sum( inuharm_6_overtime )+ sum( inuharm_7_overtime )+ sum( inuharm_8_overtime )+ sum( inuharm_9_overtime )+ sum( inuharm_10_overtime )+ sum( inuharm_11_overtime )+ sum( inuharm_12_overtime )+ sum( inuharm_13_overtime )+ sum( inuharm_14_overtime )+ sum( inuharm_15_overtime )+ sum( inuharm_16_overtime )) /(
-        SUM( all_time )* 71 )
-        )* 100,2),0) data
+        ) / NULLIF(SUM(all_time) * 71, 0)) * 100
+        END, 2), 0) AS data
         FROM
         r_stat_limit_rate_d
         <where>