diff --git a/src/components/Mindmap/Mindmap.vue b/src/components/Mindmap/Mindmap.vue
index eae4763..5ca9eeb 100644
--- a/src/components/Mindmap/Mindmap.vue
+++ b/src/components/Mindmap/Mindmap.vue
@@ -31,7 +31,7 @@
 <script lang="ts">
 import emitter from '@/mitt'
 import { defineComponent, onMounted, PropType, watch, watchEffect } from 'vue'
-import { Data, TwoNumber } from './interface'
+import { Data, Locale, TwoNumber } from './interface'
 import style from './css'
 import * as d3 from './d3'
 import { afterOperation, ImData, mmdata } from './data'
@@ -81,7 +81,7 @@ export default defineComponent({
     ctm: Boolean,
     zoom: Boolean,
     // i18n
-    locale: { type: String as PropType<'zh' | 'en'>, default: 'zh' }
+    locale: { type: String as PropType<Locale>, default: 'zh' }
   },
   setup (props, context) {
     // 立即执行
diff --git a/src/components/Mindmap/interface.ts b/src/components/Mindmap/interface.ts
index 4298f65..cd6047f 100644
--- a/src/components/Mindmap/interface.ts
+++ b/src/components/Mindmap/interface.ts
@@ -53,3 +53,4 @@ export type SelectionRect = d3.Selection<SVGRectElement, Mdata, SVGGElement, IsM
 export type SelectionCircle = d3.Selection<SVGCircleElement, Mdata, SVGGElement, IsMdata>
 export type TwoNumber = [number, number]
 export type IsMdata = Mdata | null
+export type Locale = 'zh' | 'en' | 'ptBR'
\ No newline at end of file
diff --git a/src/i18n/index.ts b/src/i18n/index.ts
index 91fd59a..1b61584 100644
--- a/src/i18n/index.ts
+++ b/src/i18n/index.ts
@@ -1,6 +1,7 @@
 import i18next from 'i18next'
 import zh from './zh'
 import en from './en'
+import ptBR from './ptBR'
 
 i18next.init({
   fallbackLng: 'zh',
@@ -8,7 +9,8 @@ i18next.init({
   // debug: true,
   resources: {
     zh,
-    en
+    en,
+    ptBR
   }
 })
 
diff --git a/src/i18n/ptBR.ts b/src/i18n/ptBR.ts
new file mode 100644
index 0000000..00873ef
--- /dev/null
+++ b/src/i18n/ptBR.ts
@@ -0,0 +1,21 @@
+export default {
+  translation: {
+    contextmenu: {
+      collapse: 'Fechar',
+      expand: 'Abrir',
+      delete: 'Excluir',
+      'delete-one': 'Excluir único nó',
+      add: 'Adicionar nó filho',
+      'add-parent': 'Adicionar nó antes',
+      'add-sibling': 'Adicionar nó abaixo',
+      'add-sibling-before': 'Adicionar nó acima',
+      cut: 'Recortar',
+      copy: 'Copiar',
+      paste: 'Colar',
+      selectall: 'Selecionar tudo',
+      zoomin: 'Aproximar',
+      zoomout: 'Retrair',
+      zoomfit: 'Centralizar'
+    }
+  }
+}
\ No newline at end of file