diff --git a/components/action-sheet/scripts/docs-gen.js b/components/action-sheet/scripts/docs-gen.js
index 4463fa692..7eba9d60c 100644
--- a/components/action-sheet/scripts/docs-gen.js
+++ b/components/action-sheet/scripts/docs-gen.js
@@ -131,7 +131,7 @@ fs.writeFileSync(`../${name}/README.md`, enContent.replace(/<iframe[\s\S]*?<\/if
 
 function extract(startWith, str) {
   const start = str.indexOf(startWith)
-
+  if (start === -1) return ''
   let end = start + startWith.length
   let stackCount = 1
   while (end < str.length) {
diff --git a/components/avatar/scripts/docs-gen.js b/components/avatar/scripts/docs-gen.js
index 4463fa692..7eba9d60c 100644
--- a/components/avatar/scripts/docs-gen.js
+++ b/components/avatar/scripts/docs-gen.js
@@ -131,7 +131,7 @@ fs.writeFileSync(`../${name}/README.md`, enContent.replace(/<iframe[\s\S]*?<\/if
 
 function extract(startWith, str) {
   const start = str.indexOf(startWith)
-
+  if (start === -1) return ''
   let end = start + startWith.length
   let stackCount = 1
   while (end < str.length) {
diff --git a/components/badge/scripts/docs-gen.js b/components/badge/scripts/docs-gen.js
index 229c467ef..7eba9d60c 100644
--- a/components/badge/scripts/docs-gen.js
+++ b/components/badge/scripts/docs-gen.js
@@ -3,15 +3,9 @@ const fs = require('fs')
 
 const content = fs.readFileSync('./src/index.tsx', 'utf-8')
 
-const props = content.match(new RegExp('interface Props \\{[\\s\\S]*?}'))[0].replace('interface Props ', '')
+const props = extract('interface Props {', content).replace('interface Props ', '')
 
-const defaultPropsContext = content.match(new RegExp('static defaultProps = \\{[\\s\\S]*?}'))
-let defaultProps
-
-if (defaultPropsContext) {
-
-  defaultProps = defaultPropsContext[0].replace('static defaultProps = ', '').replace(/    /g, '  ').replace(/  }/g, ')')
-}
+const defaultProps = extract('static defaultProps = {', content).replace('static defaultProps = ', '').replace(/  }/g, '}').replace(/    /g, '  ')
 
 
 const eventContexts = content.match(new RegExp('this.fire\\([\\s\\S]*?[,|)]', 'g'))
@@ -132,3 +126,28 @@ fs.writeFileSync(`../${name}/README.md`, enContent.replace(/<iframe[\s\S]*?<\/if
 // console.log(props)
 // console.log(defaultProps)
 // console.log(Object.keys(eventMap))
+
+
+
+function extract(startWith, str) {
+  const start = str.indexOf(startWith)
+  if (start === -1) return ''
+  let end = start + startWith.length
+  let stackCount = 1
+  while (end < str.length) {
+    if (str[end] === '}') {
+      if (stackCount === 1) {
+
+        break
+      } else {
+        stackCount--
+      }
+    } else if (str[end] === '{') {
+      stackCount++
+    }
+
+    end++
+  }
+
+  return str.substring(start, end + 1)
+}
diff --git a/components/bottom-nav/scripts/docs-gen.js b/components/bottom-nav/scripts/docs-gen.js
index 4463fa692..7eba9d60c 100644
--- a/components/bottom-nav/scripts/docs-gen.js
+++ b/components/bottom-nav/scripts/docs-gen.js
@@ -131,7 +131,7 @@ fs.writeFileSync(`../${name}/README.md`, enContent.replace(/<iframe[\s\S]*?<\/if
 
 function extract(startWith, str) {
   const start = str.indexOf(startWith)
-
+  if (start === -1) return ''
   let end = start + startWith.length
   let stackCount = 1
   while (end < str.length) {
diff --git a/components/breadcrumb/scripts/docs-gen.js b/components/breadcrumb/scripts/docs-gen.js
index 229c467ef..7eba9d60c 100644
--- a/components/breadcrumb/scripts/docs-gen.js
+++ b/components/breadcrumb/scripts/docs-gen.js
@@ -3,15 +3,9 @@ const fs = require('fs')
 
 const content = fs.readFileSync('./src/index.tsx', 'utf-8')
 
-const props = content.match(new RegExp('interface Props \\{[\\s\\S]*?}'))[0].replace('interface Props ', '')
+const props = extract('interface Props {', content).replace('interface Props ', '')
 
-const defaultPropsContext = content.match(new RegExp('static defaultProps = \\{[\\s\\S]*?}'))
-let defaultProps
-
-if (defaultPropsContext) {
-
-  defaultProps = defaultPropsContext[0].replace('static defaultProps = ', '').replace(/    /g, '  ').replace(/  }/g, ')')
-}
+const defaultProps = extract('static defaultProps = {', content).replace('static defaultProps = ', '').replace(/  }/g, '}').replace(/    /g, '  ')
 
 
 const eventContexts = content.match(new RegExp('this.fire\\([\\s\\S]*?[,|)]', 'g'))
@@ -132,3 +126,28 @@ fs.writeFileSync(`../${name}/README.md`, enContent.replace(/<iframe[\s\S]*?<\/if
 // console.log(props)
 // console.log(defaultProps)
 // console.log(Object.keys(eventMap))
+
+
+
+function extract(startWith, str) {
+  const start = str.indexOf(startWith)
+  if (start === -1) return ''
+  let end = start + startWith.length
+  let stackCount = 1
+  while (end < str.length) {
+    if (str[end] === '}') {
+      if (stackCount === 1) {
+
+        break
+      } else {
+        stackCount--
+      }
+    } else if (str[end] === '{') {
+      stackCount++
+    }
+
+    end++
+  }
+
+  return str.substring(start, end + 1)
+}