diff --git a/src/containers/laanc/LaancPlanContainer.js b/src/containers/laanc/LaancPlanContainer.js
index b15dcf9..f7b41d8 100644
--- a/src/containers/laanc/LaancPlanContainer.js
+++ b/src/containers/laanc/LaancPlanContainer.js
@@ -185,7 +185,10 @@ export default function LaancPlanContainer({
       });
 
       return false;
-    } else if (!detailData.areaList[0].fltElev) {
+    } else if (
+      !detailData.areaList[0].fltElev ||
+      detailData.areaList[0].fltElev === '0'
+    ) {
       setModal2({
         isOpen: true,
         title: '필수값 입력 오류',
diff --git a/src/views/laanc/LaancStep1.js b/src/views/laanc/LaancStep1.js
index 5fc1548..96dd424 100644
--- a/src/views/laanc/LaancStep1.js
+++ b/src/views/laanc/LaancStep1.js
@@ -65,7 +65,6 @@ export default function LaancStep1({
       data.arcrftList[0].arcrftWdth == '10' ||
       data.arcrftList[0].arcrftWdth == '9'
     ) {
-      console.log('>>>>>SDfsdfsd');
     }
   }, [data]);
   const handleInputClick = type => {
@@ -85,6 +84,22 @@ export default function LaancStep1({
     }
   };
 
+  // 비사업 클릭시 기존 값 초기화 작업
+  const initialValue = () => {
+    if (data.arcrftList[0].idntfNum) {
+      handleChange({
+        type: 'arcrft',
+        name: 'idntfNum',
+        value: ''
+      });
+    } else if (data.arcrftList[0].arcrftTypeCd) {
+      handleChange({
+        type: 'arcrft',
+        name: 'arcrftTypeCd',
+        value: ''
+      });
+    }
+  };
   return (
     <>
       <ModalHeader>
@@ -457,7 +472,9 @@ export default function LaancStep1({
                       </FormGroup>
                     </Col>
                   </>
-                ) : null}
+                ) : (
+                  initialValue()
+                )}
               </Row>
             </Col>
           </Row>