diff --git a/example/components/changelog/readme.md b/example/components/changelog/readme.md
index bdc2022e..e8337352 100644
--- a/example/components/changelog/readme.md
+++ b/example/components/changelog/readme.md
@@ -8,6 +8,12 @@
 
 <div class="changelog-wrapper">
 
+### 2.5.9-beta.38 {page=#/changelog}
+
+* **[update]**:
+    - - [Progress 进度条](#/progress) size 默认值改为 `small`
+
+
 ### 2.5.9-beta.37 {page=#/changelog}
 
 * **[add]**:
diff --git a/example/components/progress/readme.md b/example/components/progress/readme.md
index 9bf9226d..892b5e9a 100644
--- a/example/components/progress/readme.md
+++ b/example/components/progress/readme.md
@@ -176,7 +176,7 @@
 |------|------|------|------|------|
 | theme | 显示类型 | String | `primary` / `warning` / `success` / `danger` | `primary` |
 | percent | 进度百分比 | Number | 0 < `percent` < 1 | —— |
-| size | 尺寸 | String | `small` / `normal` / `large` |`normal`|
+| size | 尺寸 | String | `small` / `normal` / `large` |`small`|
 | stroke-width | 进度条的宽度，单位 px | Number | —— | —— |
 | text-inside | 进度条显示文字内置在进度条内 | Boolean | `true` `false` | false |
 | color | 进度条背景色 | String | —— | —— |
diff --git a/package.json b/package.json
index a91224c7..a439f835 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bk-magic-vue",
-  "version": "2.5.9-beta.37",
+  "version": "2.5.9-beta.38",
   "description": "基于蓝鲸 Magicbox 和 Vue 的前端组件库",
   "main": "dist/bk-magic-vue.min.js",
   "files": [
diff --git a/src/components/progress/progress.vue b/src/components/progress/progress.vue
index 79702104..53adc02f 100644
--- a/src/components/progress/progress.vue
+++ b/src/components/progress/progress.vue
@@ -80,7 +80,7 @@ export default {
     },
     size: {
       type: String,
-      default: 'normal',
+      default: 'small',
       validator (value) {
         if (['small', 'normal', 'large'].indexOf(value) < 0) {
           console.error(`size property is not valid: '${value}'`)