diff --git a/flossom-common/flossom-common-core/src/main/java/com/flossom/common/core/domain/entity/WxInstrument.java b/flossom-common/flossom-common-core/src/main/java/com/flossom/common/core/domain/entity/WxInstrument.java
index 15e458e..c4d7115 100644
--- a/flossom-common/flossom-common-core/src/main/java/com/flossom/common/core/domain/entity/WxInstrument.java
+++ b/flossom-common/flossom-common-core/src/main/java/com/flossom/common/core/domain/entity/WxInstrument.java
@@ -115,6 +115,8 @@ public class WxInstrument extends BaseEntity {
     @JsonFormat(pattern = "HH:mm:ss")
     private LocalTime nursingTime;
 
+    private String nursingTimeStr;
+
     /**
      * iot版本
      */
@@ -360,6 +362,10 @@ public class WxInstrument extends BaseEntity {
 
     public void setNursingTime(LocalTime nursingTime) {
         this.nursingTime = nursingTime;
+        // 将 localTime 转为 分秒 格式
+        if (nursingTime != null) {
+            this.nursingTimeStr = String.format("%02d:%02d", nursingTime.getMinute(), nursingTime.getSecond());
+        }
     }
 
     public LocalTime getNursingTime() {
@@ -565,4 +571,8 @@ public class WxInstrument extends BaseEntity {
     public void setWe200IotVersionUpgrade(String we200IotVersionUpgrade) {
         this.we200IotVersionUpgrade = we200IotVersionUpgrade;
     }
+
+    public String getNursingTimeStr() {
+        return nursingTimeStr;
+    }
 }