diff --git a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/service/impl/PatientWeightServiceImpl.java b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/service/impl/PatientWeightServiceImpl.java
index cf00b3a..a01e984 100644
--- a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/service/impl/PatientWeightServiceImpl.java
+++ b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/service/impl/PatientWeightServiceImpl.java
@@ -1339,7 +1339,7 @@ public class PatientWeightServiceImpl extends BaseServiceImpl implements Patient
         }
         Double b = Double.parseDouble(before);
         Double n = Double.parseDouble(now);
-        return MathUtil.doubleFormat2(n - b);
+        return Double.parseDouble(MathUtil.doubleFormat(n - b));
     }