diff --git a/packages/form/src/Form.vue b/packages/form/src/Form.vue
index 0f4b9a90..1c41b9c3 100644
--- a/packages/form/src/Form.vue
+++ b/packages/form/src/Form.vue
@@ -89,7 +89,6 @@ export default defineComponent({
 
     size: {
       type: String,
-      default: 'small',
     },
 
     inline: {
diff --git a/packages/form/src/FormDialog.vue b/packages/form/src/FormDialog.vue
index 0f09d642..be0a8409 100644
--- a/packages/form/src/FormDialog.vue
+++ b/packages/form/src/FormDialog.vue
@@ -15,6 +15,7 @@
         <m-form
           v-model="stepActive"
           ref="form"
+          :size="size"
           :config="config"
           :init-values="values"
           :label-width="labelWidth"
@@ -77,6 +78,8 @@ export default defineComponent({
 
     labelWidth: [Number, String],
 
+    size: String as PropType<'mini' | 'small' | 'medium'>,
+
     confirmText: {
       type: String,
       default: '确定',