diff --git a/src/components/SimpleForm/src/SimpleForm.vue b/src/components/SimpleForm/src/SimpleForm.vue
index 02ab884..c6685ce 100644
--- a/src/components/SimpleForm/src/SimpleForm.vue
+++ b/src/components/SimpleForm/src/SimpleForm.vue
@@ -109,7 +109,7 @@
 
     function getColWidth(schema: any) {
         const compProps = schema.componentProps;
-        if (compProps.responsive) {
+        if (compProps?.responsive) {
             if (compProps.respNewRow) {
                 return 24; // 响应式布局下独立成行
             } else {