diff --git a/components/tree-select/demo/async.vue b/components/tree-select/demo/async.vue
index 9f9e311d0..c3bba6ec3 100644
--- a/components/tree-select/demo/async.vue
+++ b/components/tree-select/demo/async.vue
@@ -58,7 +58,11 @@ export default defineComponent({
       return new Promise(resolve => {
         const { id } = treeNode.dataRef;
         setTimeout(() => {
-          treeData.value = treeData.value.concat([genTreeNode(id, false), genTreeNode(id, true)]);
+          treeData.value = treeData.value.concat([
+            genTreeNode(id, false),
+            genTreeNode(id, true),
+            genTreeNode(id, true),
+          ]);
           console.log(treeData.value);
           resolve(true);
         }, 300);
diff --git a/components/tree-select/index.en-US.md b/components/tree-select/index.en-US.md
index 9b7961410..67bf2ffb4 100644
--- a/components/tree-select/index.en-US.md
+++ b/components/tree-select/index.en-US.md
@@ -54,6 +54,8 @@ Tree selection control.
 | value(v-model) | To set the current selected treeNode(s). | string\|string\[] | - |  |
 | virtual | Disable virtual scroll when set to false | boolean | true | 3.0 |
 | title | custom title | slot |  | 3.0.0 |
+| notFoundContent | Specify content to show when no result matches | slot | `Not Found` |  |
+| tagRender | Customize tag render when `multiple` | (props) => slot | - | 3.0 |
 
 ### Events
 
diff --git a/components/tree-select/index.tsx b/components/tree-select/index.tsx
index 3605b4e87..abeaa82de 100644
--- a/components/tree-select/index.tsx
+++ b/components/tree-select/index.tsx
@@ -97,7 +97,7 @@ const TreeSelect = defineComponent({
       devWarning(
         props.multiple !== false || !props.treeCheckable,
         'TreeSelect',
-        '`multiple` will alway be `true` when `treeCheckable` is true',
+        '`multiple` will always be `true` when `treeCheckable` is true',
       );
       devWarning(
         props.replaceFields === undefined,
@@ -234,6 +234,7 @@ const TreeSelect = defineComponent({
           class={mergedClassName}
           listHeight={listHeight}
           listItemHeight={listItemHeight}
+          treeLine={!!treeLine}
           inputIcon={suffixIcon}
           multiple={multiple}
           removeIcon={removeIcon}
diff --git a/components/tree-select/index.zh-CN.md b/components/tree-select/index.zh-CN.md
index 7c8b929b6..f3beffde8 100644
--- a/components/tree-select/index.zh-CN.md
+++ b/components/tree-select/index.zh-CN.md
@@ -55,6 +55,8 @@ cover: https://gw.alipayobjects.com/zos/alicdn/Ax4DA0njr/TreeSelect.svg
 | value(v-model) | 指定当前选中的条目 | string/string\[] | - |  |
 | virtual | 设置 false 时关闭虚拟滚动 | boolean | true | 3.0 |
 | title | 自定义标题 | slot |  | 3.0.0 |
+| notFoundContent | 当下拉列表为空时显示的内容 | slot | `Not Found` |  |
+| tagRender | 自定义 tag 内容，多选时生效 | slot | - | 3.0 |
 
 ### 事件