diff --git a/packages/components/select-input/SelectInput.tsx b/packages/components/select-input/SelectInput.tsx
index ee08f47da3..b6140b6b39 100644
--- a/packages/components/select-input/SelectInput.tsx
+++ b/packages/components/select-input/SelectInput.tsx
@@ -19,7 +19,9 @@ export interface SelectInputProps extends TdSelectInputProps, StyledProps {
   options?: any[]; // 参数穿透options, 给SelectInput/SelectInput 自定义选中项呈现的内容和多选状态下设置折叠项内容
 }
 
-const SelectInput = React.forwardRef<Partial<PopupRef & InputRef>, SelectInputProps>((originalProps, ref) => {
+export type SelectInputRef = Partial<PopupRef & InputRef>;
+
+const SelectInput = React.forwardRef<SelectInputRef, SelectInputProps>((originalProps, ref) => {
   const { classPrefix: prefix } = useConfig();
 
   const props = useDefaultProps<SelectInputProps>(originalProps, selectInputDefaultProps);
diff --git a/packages/components/select-input/index.ts b/packages/components/select-input/index.ts
index 1e269e3dd5..2a264bf40a 100644
--- a/packages/components/select-input/index.ts
+++ b/packages/components/select-input/index.ts
@@ -2,7 +2,7 @@ import _SelectInput from './SelectInput';
 
 import './style/index.js';
 
-export type { SelectInputProps } from './SelectInput';
+export type { SelectInputProps, SelectInputRef } from './SelectInput';
 export * from './type';
 
 export const SelectInput = _SelectInput;
diff --git a/packages/components/select-input/useSingle.tsx b/packages/components/select-input/useSingle.tsx
index 9e92324767..ba13b49269 100644
--- a/packages/components/select-input/useSingle.tsx
+++ b/packages/components/select-input/useSingle.tsx
@@ -1,4 +1,4 @@
-import React, { useRef } from 'react';
+import React, { useRef, useState } from 'react';
 
 import classNames from 'classnames';
 import { isObject, pick } from 'lodash-es';
@@ -50,6 +50,8 @@ export default function useSingle(props: TdSelectInputProps) {
   const inputRef = useRef<InputRef>(null);
   const blurTimeoutRef = useRef(null);
 
+  const [isInputFocused, setIsInputFocused] = useState(false);
+
   const [inputValue, setInputValue] = useControlled(props, 'inputValue', props.onInputChange);
 
   const commonInputProps: SelectInputCommonProperties = {
@@ -84,6 +86,7 @@ export default function useSingle(props: TdSelectInputProps) {
       // 强制把 popupVisible 设置为 false 时，点击 input，会出现 blur -> focus 的情况，因此忽略前面短暂的 blur 事件
       blurTimeoutRef.current = setTimeout(() => {
         if (blurTimeoutRef.current) {
+          setIsInputFocused(false);
           if (!popupVisible) {
             onInnerBlur(ctx);
           } else if (!props.panel) {
@@ -99,6 +102,7 @@ export default function useSingle(props: TdSelectInputProps) {
         clearTimeout(blurTimeoutRef.current);
         blurTimeoutRef.current = null;
       }
+      setIsInputFocused(true);
       props.onFocus?.(value, { ...context, inputValue: val });
       // focus might not need to change input value. it will caught some curious errors in tree-select
       // !popupVisible && setInputValue(getInputValue(value, keys), { ...context, trigger: 'input' });
@@ -131,8 +135,8 @@ export default function useSingle(props: TdSelectInputProps) {
         onBlur={handleBlur}
         {...props.inputProps}
         inputClass={classNames(props.inputProps?.className, {
-          [`${classPrefix}-input--focused`]: popupVisible,
-          [`${classPrefix}-is-focused`]: popupVisible,
+          [`${classPrefix}-input--focused`]: popupVisible || isInputFocused,
+          [`${classPrefix}-is-focused`]: popupVisible || isInputFocused,
         })}
       />
     );
diff --git a/packages/components/select/base/Select.tsx b/packages/components/select/base/Select.tsx
index 8d7e702d9e..7511796ed6 100644
--- a/packages/components/select/base/Select.tsx
+++ b/packages/components/select/base/Select.tsx
@@ -22,7 +22,8 @@ import useDefaultProps from '../../hooks/useDefaultProps';
 import Loading from '../../loading';
 import { useLocaleReceiver } from '../../locale/LocalReceiver';
 import SelectInput, {
-  SelectInputChangeContext,
+  type SelectInputChangeContext,
+  type SelectInputRef,
   type SelectInputValue,
   type SelectInputValueChangeContext,
 } from '../../select-input';
@@ -49,7 +50,7 @@ export interface SelectProps<T = SelectOption> extends TdSelectProps<T>, StyledP
 type OptionsType = TdOptionProps[];
 
 const Select = forwardRefWithStatics(
-  (originalProps: SelectProps, ref: React.Ref<HTMLDivElement>) => {
+  (originalProps: SelectProps, ref: React.Ref<SelectInputRef>) => {
     const props = useDefaultProps<SelectProps>(originalProps, selectDefaultProps);
     // 国际化文本初始化
     const [local, t] = useLocaleReceiver('select');
@@ -107,7 +108,7 @@ const Select = forwardRefWithStatics(
 
     const { valueKey, labelKey, disabledKey } = useMemo(() => getKeyMapping(keys), [keys]);
 
-    const selectInputRef = useRef(null);
+    const selectInputRef = useRef<SelectInputRef>(null);
     const { classPrefix } = useConfig();
     const { overlayClassName, onScroll, onScrollToBottom, ...restPopupProps } = popupProps || {};
     const [isScrolling, toggleIsScrolling] = useState(false);
@@ -291,6 +292,7 @@ const Select = forwardRefWithStatics(
 
     const { hoverIndex, handleKeyDown } = useKeyboardControl({
       displayOptions: flattenedOptions as TdOptionProps[],
+      filterable,
       keys,
       innerPopupVisible,
       max,
diff --git a/packages/components/select/hooks/useKeyboardControl.ts b/packages/components/select/hooks/useKeyboardControl.ts
index 7699cbb027..4799d7e84b 100644
--- a/packages/components/select/hooks/useKeyboardControl.ts
+++ b/packages/components/select/hooks/useKeyboardControl.ts
@@ -3,11 +3,13 @@ import { useEffect, useMemo, useRef, useState } from 'react';
 import useConfig from '../../hooks/useConfig';
 import { getKeyMapping, getSelectValueArr } from '../util/helper';
 
+import type { SelectInputRef } from '../../select-input/SelectInput';
 import type { SelectOption, SelectValue, SelectValueChangeTrigger, TdOptionProps, TdSelectProps } from '../type';
 
 export type useKeyboardControlType = {
   max: number;
   multiple: boolean;
+  filterable: TdSelectProps['filterable'];
   keys: TdSelectProps['keys'];
   value: SelectValue<SelectOption>;
   valueType: TdSelectProps['valueType'];
@@ -22,13 +24,14 @@ export type useKeyboardControlType = {
   handlePopupVisibleChange: (visible: boolean, ctx: { e: React.KeyboardEvent<HTMLInputElement> }) => void;
   displayOptions: TdOptionProps[];
   onCheckAllChange: (checkAll: boolean, e?: React.KeyboardEvent<HTMLInputElement>) => void;
-  selectInputRef: any;
+  selectInputRef: React.MutableRefObject<SelectInputRef>;
   toggleIsScrolling: (isScrolling: boolean) => void;
 };
 
 export default function useKeyboardControl({
   max,
   multiple,
+  filterable,
   keys,
   value,
   valueType,
@@ -93,7 +96,7 @@ export default function useKeyboardControl({
     let newIndex = hoverIndex;
 
     switch (e.code) {
-      case 'ArrowUp':
+      case 'ArrowUp': {
         e.preventDefault();
         if (hoverIndex === -1) newIndex = 0;
         else if (hoverIndex === 0 || hoverIndex > optionsListLength - 1) newIndex = optionsListLength - 1;
@@ -104,7 +107,8 @@ export default function useKeyboardControl({
         changeHoverIndex(newIndex);
         handleKeyboardScroll(newIndex);
         break;
-      case 'ArrowDown':
+      }
+      case 'ArrowDown': {
         e.preventDefault();
         if (hoverIndex === -1 || hoverIndex >= optionsListLength - 1) newIndex = 0;
         else newIndex += 1;
@@ -114,6 +118,7 @@ export default function useKeyboardControl({
         changeHoverIndex(newIndex);
         handleKeyboardScroll(newIndex);
         break;
+      }
       case 'Enter': {
         if (!innerPopupVisible) {
           handlePopupVisibleChange(true, { e });
@@ -152,10 +157,27 @@ export default function useKeyboardControl({
         }
         break;
       }
-      case 'Escape':
+      case 'Escape': {
         handlePopupVisibleChange(false, { e });
         changeHoverIndex(-1);
         handleKeyboardScroll(0);
+        break;
+      }
+      case 'Backspace':
+      case 'Delete': {
+        // 单选模式的删除无意义
+        if (!multiple && !innerPopupVisible) {
+          e.preventDefault();
+        }
+        break;
+      }
+      default: {
+        // filterable 模式，按下其它字符，打开弹窗进入输入态
+        if (filterable && !innerPopupVisible && e.key.length === 1) {
+          handlePopupVisibleChange(true, { e });
+        }
+        break;
+      }
     }
   };