diff --git a/shkd-cosmic-debug/src/main/java/shkd/fi/er/plugin/formplugin/ContractbillFromPlugin.java b/shkd-cosmic-debug/src/main/java/shkd/fi/er/plugin/formplugin/ContractbillFromPlugin.java
index 0c77b4c..5ac436c 100644
--- a/shkd-cosmic-debug/src/main/java/shkd/fi/er/plugin/formplugin/ContractbillFromPlugin.java
+++ b/shkd-cosmic-debug/src/main/java/shkd/fi/er/plugin/formplugin/ContractbillFromPlugin.java
@@ -1,12 +1,14 @@
 package shkd.fi.er.plugin.formplugin;
 
 import kd.bos.dataentity.entity.DynamicObject;
+import kd.bos.dataentity.entity.DynamicObjectCollection;
 import kd.bos.dataentity.metadata.IDataEntityProperty;
 import kd.bos.entity.datamodel.IDataModel;
 import kd.bos.entity.datamodel.events.ChangeData;
 import kd.bos.entity.datamodel.events.PropertyChangedArgs;
 import kd.bos.form.plugin.AbstractFormPlugin;
 
+import java.math.BigDecimal;
 import java.util.EventObject;
 
 /**
@@ -54,6 +56,20 @@ public class ContractbillFromPlugin extends AbstractFormPlugin {
             case "contractparty" :
                 DynamicObject newValue = (DynamicObject)changeData.getNewValue();
                 this.getModel().setValue("costcompany",newValue);
+            case "orientryamount":
+                DynamicObjectCollection expenseentryentity = this.getModel().getEntryEntity("expenseentryentity");
+                BigDecimal orientryamounttotal = BigDecimal.ZERO;
+                BigDecimal taxamounttotal = BigDecimal.ZERO;
+                for(int i = 0;i<expenseentryentity.size();i++){
+                    DynamicObject dynamicObject = expenseentryentity.get(i);
+                    BigDecimal orientryamount = dynamicObject.getBigDecimal("orientryamount");
+                    BigDecimal taxamount = dynamicObject.getBigDecimal("taxamount");
+                    orientryamounttotal = orientryamounttotal.add(orientryamount);
+                    taxamounttotal = taxamounttotal.add(taxamount);
+                }
+                BigDecimal divide = orientryamounttotal.divide(taxamounttotal, 2, 4); //计算税率
+                this.getModel().setValue("taxrate",divide);
+
         }
     }
 }