diff --git a/pc4mobx/hrmSalary/pages/salaryItem/formalFormModal.js b/pc4mobx/hrmSalary/pages/salaryItem/formalFormModal.js
index 8d9cd46d..038056e1 100644
--- a/pc4mobx/hrmSalary/pages/salaryItem/formalFormModal.js
+++ b/pc4mobx/hrmSalary/pages/salaryItem/formalFormModal.js
@@ -73,6 +73,24 @@ export default class FormalFormModal extends React.Component {
     this.formulaDatasourceList();
   }
 
+  triggerKeyDown = (e) => {
+    const { value } = this.state;
+    if (e.key === "Backspace" && value) {
+      let propsTextarea = this.contentProps.refs.textareaNormal.refs.input.refs.input; // 获取dom节点实例
+      const { end } = this.getPositionForTextArea(propsTextarea);
+      const str = value.substring(end - 1, end);
+      if (str === "}") {
+        const index = value.lastIndexOf("{", end - 1);
+        const currentValue = value.substring(index, end);
+        console.log("currentValue", this.state.value, currentValue);
+        console.log(this.state.value.replace(currentValue, "}"));
+        this.setState({
+          value: this.state.value.replace(currentValue, "}")
+        });
+      }
+    }
+  };
+
   formulaDatasourceList = () => {
     const { salaryItemStore } = this.props;
     const { formulaDatasourceList } = salaryItemStore;
@@ -274,6 +292,7 @@ export default class FormalFormModal extends React.Component {
             value={value} onChange={(value) => this.handleChange(value)}
             noResize={true}
             style={{ fontSize: "14px", lineHeight: 1.2 }}
+            onKeyDown={this.triggerKeyDown}
           />
         </div>
         <div style={{ display: "flex", height: "300px", marginTop: "10px" }}>