diff --git a/packages/vant/src/locale/README.md b/packages/vant/src/locale/README.md
index e1d39150c..70bcedf9d 100644
--- a/packages/vant/src/locale/README.md
+++ b/packages/vant/src/locale/README.md
@@ -39,25 +39,26 @@ Locale.add(messages);
 
 Current supported languages:
 
-| Language                 | Filename     |
-| ------------------------ | ------------ |
-| German                   | de-DE        |
-| German (formal)          | de-DE-formal |
-| English                  | en-US        |
-| Spanish (Spain)          | es-ES        |
-| French                   | fr-FR        |
-| Hindi                    | hi-IN        |
-| Japanese                 | ja-JP        |
-| Korean                   | ko-KR        |
-| Norwegian                | nb-NO        |
-| Portuguese (Brazil)      | pt-BR        |
-| Romanian                 | ro-RO        |
-| Russian                  | ru-RU        |
-| Turkish                  | tr-TR        |
-| Thai                     | th-TH        |
-| Chinese                  | zh-CN        |
-| Traditional Chinese (HK) | zh-HK        |
-| Traditional Chinese (TW) | zh-TW        |
+| Language                 | Filename     | Version  |
+| ------------------------ | ------------ | -------- |
+| Bangla (Bangladesh)      | bn-BD        | `v3.4.5` |
+| German                   | de-DE        | -        |
+| German (formal)          | de-DE-formal | -        |
+| English                  | en-US        | -        |
+| Spanish (Spain)          | es-ES        | -        |
+| French                   | fr-FR        | -        |
+| Hindi                    | hi-IN        | `v3.4.3` |
+| Japanese                 | ja-JP        | -        |
+| Korean                   | ko-KR        | `v3.4.3` |
+| Norwegian                | nb-NO        | -        |
+| Portuguese (Brazil)      | pt-BR        | `v3.3.3` |
+| Romanian                 | ro-RO        | -        |
+| Russian                  | ru-RU        | `v3.1.5` |
+| Turkish                  | tr-TR        | -        |
+| Thai                     | th-TH        | -        |
+| Chinese                  | zh-CN        | -        |
+| Traditional Chinese (HK) | zh-HK        | -        |
+| Traditional Chinese (TW) | zh-TW        | -        |
 
 > View all language configs [Here](https://github.com/youzan/vant/tree/dev/packages/vant/src/locale/lang).
 
diff --git a/packages/vant/src/locale/README.zh-CN.md b/packages/vant/src/locale/README.zh-CN.md
index 8fe41df41..62bcc2076 100644
--- a/packages/vant/src/locale/README.zh-CN.md
+++ b/packages/vant/src/locale/README.zh-CN.md
@@ -40,25 +40,26 @@ Locale.add(messages);
 
 目前支持的语言:
 
-| 语言            | 文件名       |
-| --------------- | ------------ |
-| 德语            | de-DE        |
-| 德语 (正式)     | de-DE-formal |
-| 英语            | en-US        |
-| 西班牙语        | es-ES        |
-| 法语            | fr-FR        |
-| 印地语          | hi-IN        |
-| 日语            | ja-JP        |
-| 韩语/朝鲜语     | ko-KR.ts     |
-| 挪威语          | nb-NO        |
-| 葡萄牙语 (巴西) | pt-BR        |
-| 罗马尼亚语      | ro-RO        |
-| 俄罗斯语        | ru-RU        |
-| 土耳其语        | tr-TR        |
-| 泰语            | th-TH        |
-| 简体中文        | zh-CN        |
-| 繁體中文（港）  | zh-HK        |
-| 繁體中文（台）  | zh-TW        |
+| 语言                 | 文件名       | 版本     |
+| -------------------- | ------------ | -------- |
+| 孟加拉语（孟加拉国） | bn-BD        | `v3.4.5` |
+| 德语                 | de-DE        | -        |
+| 德语 (正式)          | de-DE-formal | -        |
+| 英语                 | en-US        | -        |
+| 西班牙语             | es-ES        | -        |
+| 法语                 | fr-FR        | -        |
+| 印地语               | hi-IN        | `v3.4.3` |
+| 日语                 | ja-JP        | -        |
+| 韩语/朝鲜语          | ko-KR        | `v3.4.3` |
+| 挪威语               | nb-NO        | -        |
+| 葡萄牙语 (巴西)      | pt-BR        | `v3.3.3` |
+| 罗马尼亚语           | ro-RO        | -        |
+| 俄罗斯语             | ru-RU        | `v3.1.5` |
+| 土耳其语             | tr-TR        | -        |
+| 泰语                 | th-TH        | -        |
+| 简体中文             | zh-CN        | -        |
+| 繁體中文（港）       | zh-HK        | -        |
+| 繁體中文（台）       | zh-TW        | -        |
 
 > 在 [这里](https://github.com/youzan/vant/tree/dev/packages/vant/src/locale/lang) 查看所有的语言包源文件。
 
diff --git a/packages/vant/src/locale/lang/bn-BD.ts b/packages/vant/src/locale/lang/bn-BD.ts
new file mode 100644
index 000000000..d88715656
--- /dev/null
+++ b/packages/vant/src/locale/lang/bn-BD.ts
@@ -0,0 +1,72 @@
+export default {
+  name: 'নাম',
+  tel: 'ফোন',
+  save: 'সংরক্ষণ করুন',
+  confirm: 'নিশ্চিত করুন',
+  cancel: 'বাতিল',
+  delete: 'মুছুন',
+  loading: 'লোড হচ্ছে...',
+  noCoupon: 'কোন কুপন নেই',
+  nameEmpty: 'অনুগ্রহ করে নামটি পূরণ করুন',
+  addContact: 'যোগাযোগ যোগ করুন',
+  telInvalid: 'বিকৃত ফোন নম্বর',
+  vanCalendar: {
+    end: 'শেষ',
+    start: 'শুরু',
+    title: 'ক্যালেন্ডার',
+    weekdays: [
+      'রবিবার',
+      'সোমবার',
+      'মঙ্গলবার',
+      'বুধবার',
+      'বৃহস্পতিবার',
+      'শুক্রবার',
+      'শনিবার',
+    ],
+    monthTitle: (year: number, month: number) => `${year}/${month}`,
+    rangePrompt: (maxRange: number) =>
+      `${maxRange} দিনের বেশি নির্বাচন করবেন না`,
+  },
+  vanCascader: {
+    select: 'নির্বাচন',
+  },
+  vanPagination: {
+    prev: 'পূর্ববর্তী',
+    next: 'পরবর্তী',
+  },
+  vanPullRefresh: {
+    pulling: 'রিফ্রেশ করতে টানুন...',
+    loosing: 'রিফ্রেশ করতে আলগা...',
+  },
+  vanSubmitBar: {
+    label: 'মোট:',
+  },
+  vanCoupon: {
+    unlimited: 'আনলিমিটেড',
+    discount: (discount: number) => `${discount * 10}% ছাড়`,
+    condition: (condition: number) => `অন্তত ${condition}`,
+  },
+  vanCouponCell: {
+    title: 'কুপন',
+    count: (count: number) => `আপনার ${count} কুপন আছে`,
+  },
+  vanCouponList: {
+    exchange: 'বিনিময়',
+    close: 'বন্ধ',
+    enable: 'উপলভ্য',
+    disabled: 'অনুপলব্ধ',
+    placeholder: 'কুপন কোড',
+  },
+  vanAddressEdit: {
+    area: 'এরিয়া',
+    postal: 'ডাক',
+    areaEmpty: 'অনুগ্রহ করে একটি রিসিভিং এলাকা নির্বাচন করুন',
+    addressEmpty: 'ঠিকানা খালি হতে পারে না',
+    postalEmpty: 'ভুল পোস্টাল কোড',
+    addressDetail: 'ঠিকানা',
+    defaultAddress: 'ডিফল্ট ঠিকানা হিসাবে সেট করুন',
+  },
+  vanAddressList: {
+    add: 'নতুন ঠিকানা যোগ করুন',
+  },
+};