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 feaea0a..6239733 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
@@ -344,8 +344,8 @@ public class PatientWeightServiceImpl extends BaseServiceImpl implements Patient
         if(StringUtils.isEmpty(patientWeight.getId()) && patients != null) {
             patientWeight.setCreated(new Date());
             patientWeight.setHospitalId(patients.getHospitalId());
-            if(StringUtils.isNotBlank(patientWeight.getNowWeight()) && patientWeight.getBeforeHeight() != null) {
-                patientWeight.setBmi(getBmi(patientWeight.getNowWeight(), patientWeight.getBeforeHeight()));
+            if(StringUtils.isNotBlank(patientWeight.getBeforeWeight()) && patientWeight.getBeforeHeight() != null) {
+                patientWeight.setBmi(getBmi(patientWeight.getBeforeWeight(), patientWeight.getBeforeHeight()));
             }
             patientWeight.setYn("1");
             patientWeight.setPid(patients.getPid());