diff --git a/pages/zw/manual-callmater.vue b/pages/zw/manual-callmater.vue
index 96b4b64..d22fd32 100644
--- a/pages/zw/manual-callmater.vue
+++ b/pages/zw/manual-callmater.vue
@@ -164,13 +164,17 @@
 				}
 			},
 			selectChange (e) {
-				this.index = e
-				this.index2 = ''
-				this._getPdaVehicleCodeBySectCode(e)
+				if (e) {
+					this.index = e
+					this.index2 = ''
+					this._getPdaVehicleCodeBySectCode(e)
+				}
 			},
 			selectChange2 (e) {
 				this.index2 = e
-				this._getMaterialSuppByVehicleCode()
+				if (this.index && this.index2) {
+					this._getMaterialSuppByVehicleCode()
+				}
 			},
 			selectChange4 (e) {
 				this.index4 = e