diff --git a/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/rulematch/MesEvcRuleMatchBackValueService.java b/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/rulematch/MesEvcRuleMatchBackValueService.java
index ac78c6b..9d6028d 100644
--- a/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/rulematch/MesEvcRuleMatchBackValueService.java
+++ b/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/rulematch/MesEvcRuleMatchBackValueService.java
@@ -31,7 +31,7 @@ public class MesEvcRuleMatchBackValueService implements IMesEquipVariableCfgRule
 
             for (MesEquipVariableCollectContext equipVariableCollectContext : collectContext.getEquipVariableCollectContextList()) {
 
-                if (null ==  equipVariableCollectContext || StringUtils.isEmpty(equipVariableCollectContext.getEquipVariableValue())) continue;
+                if (null == equipVariableCollectContext || StringUtils.isEmpty(equipVariableCollectContext.getEquipVariableValue())) continue;
 
                 if (CollectionUtils.isEmpty(backList)) backList = new ArrayList<>();