diff --git a/equip/src/main/java/com/foreverwin/mesnac/equip/service/impl/ResourceInspectPlanServiceImpl.java b/equip/src/main/java/com/foreverwin/mesnac/equip/service/impl/ResourceInspectPlanServiceImpl.java
index 6114482e..2d281b15 100644
--- a/equip/src/main/java/com/foreverwin/mesnac/equip/service/impl/ResourceInspectPlanServiceImpl.java
+++ b/equip/src/main/java/com/foreverwin/mesnac/equip/service/impl/ResourceInspectPlanServiceImpl.java
@@ -436,7 +436,7 @@ public class ResourceInspectPlanServiceImpl extends ServiceImpl<ResourceInspectP
                 minutes = Math.round(frequency*60*24*7);
                 break;
             case "M":
-                minutes = Math.round(frequency*60*24*7*30);
+                minutes = Math.round(frequency*60*24*30);
                 break;
             default:
                 throw BusinessException.build("周期时间不存在！");