diff --git a/src/components/customField/AddForm.vue b/src/components/customField/AddForm.vue
index f42da00..5548de9 100644
--- a/src/components/customField/AddForm.vue
+++ b/src/components/customField/AddForm.vue
@@ -112,6 +112,7 @@
                   :tree-data="optionsData[item.dbFieldName]"
                   tree-checkable
                   treeCheckStrictly
+                  dropdownMatchSelectWidth
                   :placeholder="$t('pleaseSelect')+item.dbFieldTxt" />
                 <!--  14, 年份选择 -->
                 <j-date v-else-if="item.fieldShowType === FieldType.YEAR_PICKER.value"