diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 6804b35c7a..c1b2b0377e 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1045,6 +1045,7 @@ admin/views/instance.vue:
   instance: "インスタンス"
   instance-name: "インスタンス名"
   instance-description: "インスタンスの紹介"
+  domain: "ドメイン"
   banner-url: "バナー画像URL"
   languages: "インスタンスの対象言語"
   languages-desc: "スペースで区切って複数設定できます。"
diff --git a/src/client/app/admin/views/instance.vue b/src/client/app/admin/views/instance.vue
index 7c53a5eb94..503776f5c2 100644
--- a/src/client/app/admin/views/instance.vue
+++ b/src/client/app/admin/views/instance.vue
@@ -3,6 +3,7 @@
 	<ui-card>
 		<div slot="title"><fa icon="cog"/> {{ $t('instance') }}</div>
 		<section class="fit-top fit-bottom">
+			<ui-input :value="host" readonly>{{ $t('domain') }}</ui-input>
 			<ui-input v-model="name">{{ $t('instance-name') }}</ui-input>
 			<ui-textarea v-model="description">{{ $t('instance-description') }}</ui-textarea>
 			<ui-input v-model="bannerUrl"><i slot="icon"><fa icon="link"/></i>{{ $t('banner-url') }}</ui-input>
@@ -81,11 +82,13 @@
 <script lang="ts">
 import Vue from 'vue';
 import i18n from '../../i18n';
+import { host } from '../../config';
 
 export default Vue.extend({
 	i18n: i18n('admin/views/instance.vue'),
 	data() {
 		return {
+			host,
 			maintainerName: null,
 			maintainerEmail: null,
 			disableRegistration: false,