diff --git a/packages/SnakerFlowDesigner/src/PropertySetting/index.vue b/packages/SnakerFlowDesigner/src/PropertySetting/index.vue
index 2c1c2bb713813d5c9baec78d219be92c11d923d5..b1fcff091f0de79585dd5560fdf6ca33d288cf32 100644
--- a/packages/SnakerFlowDesigner/src/PropertySetting/index.vue
+++ b/packages/SnakerFlowDesigner/src/PropertySetting/index.vue
@@ -260,21 +260,21 @@ export default {
     'form.width' (n) {
       // 宽度
       this.lf.setProperties(this.nodeId, {
-        width: Number.isNaN(n) ? 120 : n
+        width: !n || Number.isNaN(n) ? 120 : n
       })
       const nodeModel = this.lf.getNodeModelById(this.nodeId)
       if (nodeModel) {
-        nodeModel.width = Number.isNaN(n) ? 120 : n
+        nodeModel.width = !n || Number.isNaN(n) ? 120 : n
       }
     },
     'form.height' (n) {
       // 高度
       this.lf.setProperties(this.nodeId, {
-        height: Number.isNaN(n) ? 120 : n
+        height: !n || Number.isNaN(n) ? 80 : n
       })
       const nodeModel = this.lf.getNodeModelById(this.nodeId)
       if (nodeModel) {
-        nodeModel.height = Number.isNaN(n) ? 80 : n
+        nodeModel.height = !n || Number.isNaN(n) ? 80 : n
       }
     }
   },