diff --git a/packages/varlet-ui/src/button/props.ts b/packages/varlet-ui/src/button/props.ts
index 7b2ec319485..68c375bab7d 100644
--- a/packages/varlet-ui/src/button/props.ts
+++ b/packages/varlet-ui/src/button/props.ts
@@ -12,12 +12,12 @@ function sizeValidator(size: string): boolean {
 
 export const props = {
   type: {
-    type: String,
+    type: String as PropType<'default' | 'primary' | 'info' | 'success' | 'warning' | 'danger'>,
     default: 'default',
     validator: typeValidator,
   },
   size: {
-    type: String,
+    type: String as PropType<'normal' | 'mini' | 'small' | 'large'>,
     default: 'normal',
     validator: sizeValidator,
   },
diff --git a/packages/varlet-ui/src/checkbox-group/props.ts b/packages/varlet-ui/src/checkbox-group/props.ts
index 63b3d168805..dd4a1931f11 100644
--- a/packages/varlet-ui/src/checkbox-group/props.ts
+++ b/packages/varlet-ui/src/checkbox-group/props.ts
@@ -15,7 +15,7 @@ export const props = {
     type: [String, Number],
   },
   direction: {
-    type: String,
+    type: String as PropType<'horizontal' | 'vertical'>,
     default: 'horizontal',
   },
   validateTrigger: {
diff --git a/packages/varlet-ui/src/dialog/props.ts b/packages/varlet-ui/src/dialog/props.ts
index 7fc7feb2cd1..5f513eb130b 100644
--- a/packages/varlet-ui/src/dialog/props.ts
+++ b/packages/varlet-ui/src/dialog/props.ts
@@ -19,7 +19,7 @@ export const props = {
     type: String,
   },
   messageAlign: {
-    type: String,
+    type: String as PropType<'left' | 'center' | 'right'>,
     default: 'left',
     validator: messageAlignValidator,
   },
diff --git a/packages/varlet-ui/src/image/props.ts b/packages/varlet-ui/src/image/props.ts
index fff8a7a99c0..4df3ef30547 100644
--- a/packages/varlet-ui/src/image/props.ts
+++ b/packages/varlet-ui/src/image/props.ts
@@ -9,7 +9,7 @@ export const props = {
     type: String,
   },
   fit: {
-    type: String,
+    type: String as PropType<'fill' | 'contain' | 'cover' | 'none' | 'scale-down'>,
     validator: fitValidator,
     default: 'fill',
   },
@@ -34,7 +34,7 @@ export const props = {
   },
   lazy: {
     type: Boolean,
-    default: false
+    default: false,
   },
   ripple: {
     type: Boolean,
diff --git a/packages/varlet-ui/src/input/props.ts b/packages/varlet-ui/src/input/props.ts
index edd226af5d0..4f561be7849 100644
--- a/packages/varlet-ui/src/input/props.ts
+++ b/packages/varlet-ui/src/input/props.ts
@@ -11,7 +11,7 @@ export const props = {
     type: [String, Number],
   },
   type: {
-    type: String,
+    type: String as PropType<'text' | 'password'>,
     default: 'text',
     validator: typeValidator,
   },
diff --git a/packages/varlet-ui/src/menu/props.ts b/packages/varlet-ui/src/menu/props.ts
index 1391a2107b7..396dd0fd7ce 100644
--- a/packages/varlet-ui/src/menu/props.ts
+++ b/packages/varlet-ui/src/menu/props.ts
@@ -10,7 +10,7 @@ export const props = {
     default: false,
   },
   alignment: {
-    type: String,
+    type: String as PropType<'top' | 'bottom'>,
     default: 'top',
     validator: alignmentValidator,
   },
diff --git a/packages/varlet-ui/src/popup/props.ts b/packages/varlet-ui/src/popup/props.ts
index 0a3d6edb222..7a004725665 100644
--- a/packages/varlet-ui/src/popup/props.ts
+++ b/packages/varlet-ui/src/popup/props.ts
@@ -10,7 +10,7 @@ export const props = {
     default: false,
   },
   position: {
-    type: String,
+    type: String as PropType<'top' | 'bottom' | 'right' | 'left' | 'center'>,
     default: 'center',
     validator: positionValidator,
   },
diff --git a/packages/varlet-ui/src/radio-group/props.ts b/packages/varlet-ui/src/radio-group/props.ts
index df7a44dfeab..92946de0668 100644
--- a/packages/varlet-ui/src/radio-group/props.ts
+++ b/packages/varlet-ui/src/radio-group/props.ts
@@ -11,7 +11,7 @@ export const props = {
     default: undefined,
   },
   direction: {
-    type: String,
+    type: String as PropType<'horizontal' | 'vertical'>,
     default: 'horizontal',
   },
   validateTrigger: {
diff --git a/packages/varlet-ui/src/row/props.ts b/packages/varlet-ui/src/row/props.ts
index 3d812633de2..c9994efbb07 100644
--- a/packages/varlet-ui/src/row/props.ts
+++ b/packages/varlet-ui/src/row/props.ts
@@ -1,35 +1,29 @@
 import { PropType } from 'vue'
 
 function justifyValidator(justify: string) {
-  return [
-    'flex-start',
-    'flex-end',
-    'center',
-    'space-between',
-    'space-around'
-  ].includes(justify)
+  return ['flex-start', 'flex-end', 'center', 'space-between', 'space-around'].includes(justify)
 }
 
 function alignValidator(align: string) {
-  return ['flex-start', 'flex-center', 'flex-end'].includes(align)
+  return ['flex-start', 'center', 'flex-end'].includes(align)
 }
 
 export const props = {
   gutter: {
     type: [String, Number],
-    default: 0
+    default: 0,
   },
   justify: {
-    type: String,
+    type: String as PropType<'flex-start' | 'flex-end' | 'center' | 'space-between' | 'space-around'>,
     default: 'flex-start',
-    validator: justifyValidator
+    validator: justifyValidator,
   },
   align: {
-    type: String,
+    type: String as PropType<'flex-start' | 'center' | 'flex-end'>,
     default: 'flex-start',
-    validator: alignValidator
+    validator: alignValidator,
   },
   onClick: {
-    type: Function as PropType<(e: Event) => void>
-  }
+    type: Function as PropType<(e: Event) => void>,
+  },
 }
diff --git a/packages/varlet-ui/src/select/props.ts b/packages/varlet-ui/src/select/props.ts
index 340cc32e690..88b4701a317 100644
--- a/packages/varlet-ui/src/select/props.ts
+++ b/packages/varlet-ui/src/select/props.ts
@@ -55,7 +55,7 @@ export const props = {
     default: ',',
   },
   textAlign: {
-    type: String,
+    type: String as PropType<'left' | 'right' | 'center'>,
     default: 'left',
     validator: textAlignValidator,
   },
diff --git a/packages/varlet-ui/src/tabs/props.ts b/packages/varlet-ui/src/tabs/props.ts
index c835ea9fc3e..2a24e75b10d 100644
--- a/packages/varlet-ui/src/tabs/props.ts
+++ b/packages/varlet-ui/src/tabs/props.ts
@@ -12,12 +12,12 @@ export const props = {
     default: 0,
   },
   layoutDirection: {
-    type: String,
+    type: String as PropType<'horizontal' | 'vertical'>,
     default: 'horizontal',
     validator: directionValidator,
   },
   itemDirection: {
-    type: String,
+    type: String as PropType<'horizontal' | 'vertical'>,
     default: 'horizontal',
     validator: directionValidator,
   },
diff --git a/packages/varlet-ui/types/row.d.ts b/packages/varlet-ui/types/row.d.ts
index 30d9ef084e8..a8968b90473 100644
--- a/packages/varlet-ui/types/row.d.ts
+++ b/packages/varlet-ui/types/row.d.ts
@@ -3,7 +3,7 @@ import { VarComponent } from './varComponent'
 interface RowProps {
   gutter?: string | number
   justify?: 'flex-start' | 'flex-end' | 'center' | 'space-between' | 'space-around'
-  align?: 'flex-start' | 'flex-center' | 'flex-end'
+  align?: 'flex-start' | 'center' | 'flex-end'
   onClick?: (e: Event) => void
 }