diff --git a/locales/en.yml b/locales/en.yml
index 57e0c4116..dd3ee2a2a 100644
--- a/locales/en.yml
+++ b/locales/en.yml
@@ -473,6 +473,11 @@ desktop:
     mk-user:
       last-used-at: "Last used at"
 
+      follows-you: "Follows you"
+      mute: "Mute"
+      muted: "Muting"
+      unmute: "Unmute"
+
       photos:
         title: "Photos"
         loading: "Loading"
diff --git a/locales/ja.yml b/locales/ja.yml
index ee52f0716..d12eec86d 100644
--- a/locales/ja.yml
+++ b/locales/ja.yml
@@ -473,6 +473,11 @@ desktop:
     mk-user:
       last-used-at: "最終アクセス"
 
+      follows-you: "フォローされています"
+      mute: "ミュートする"
+      muted: "ミュートしています"
+      unmute: "ミュート解除"
+
       photos:
         title: "フォト"
         loading: "読み込み中"
diff --git a/src/api/serializers/user.ts b/src/api/serializers/user.ts
index fe924911c..ac157097a 100644
--- a/src/api/serializers/user.ts
+++ b/src/api/serializers/user.ts
@@ -6,6 +6,7 @@ import deepcopy = require('deepcopy');
 import { default as User, IUser } from '../models/user';
 import serializePost from './post';
 import Following from '../models/following';
+import Mute from '../models/mute';
 import getFriends from '../common/get-friends';
 import config from '../../conf';
 import rap from '@prezzemolo/rap';
@@ -113,7 +114,7 @@ export default (
 	}
 
 	if (meId && !meId.equals(_user.id)) {
-		// If the user is following
+		// Whether the user is following
 		_user.is_following = (async () => {
 			const follow = await Following.findOne({
 				follower_id: meId,
@@ -123,7 +124,7 @@ export default (
 			return follow !== null;
 		})();
 
-		// If the user is followed
+		// Whether the user is followed
 		_user.is_followed = (async () => {
 			const follow2 = await Following.findOne({
 				follower_id: _user.id,
@@ -132,6 +133,16 @@ export default (
 			});
 			return follow2 !== null;
 		})();
+
+		// Whether the user is muted
+		_user.is_muted = (async () => {
+			const mute = await Mute.findOne({
+				muter_id: meId,
+				mutee_id: _user.id,
+				deleted_at: { $exists: false }
+			});
+			return mute !== null;
+		})();
 	}
 
 	if (opts.detail) {
diff --git a/src/web/app/desktop/tags/user.tag b/src/web/app/desktop/tags/user.tag
index b4db47f9d..b29d1eaeb 100644
--- a/src/web/app/desktop/tags/user.tag
+++ b/src/web/app/desktop/tags/user.tag
@@ -226,7 +226,9 @@
 <mk-user-profile>
 	<div class="friend-form" if={ SIGNIN && I.id != user.id }>
 		<mk-big-follow-button user={ user }/>
-		<p class="followed" if={ user.is_followed }>フォローされています</p>
+		<p class="followed" if={ user.is_followed }>%i18n:desktop.tags.mk-user.follows-you%</p>
+		<p if={ user.is_muted }>%i18n:desktop.tags.mk-user.muted% <a onclick={ unmute }>%i18n:desktop.tags.mk-user.unmute%</a></p>
+		<p if={ !user.is_muted }><a onclick={ mute }>%i18n:desktop.tags.mk-user.mute%</a></p>
 	</div>
 	<div class="description" if={ user.description }>{ user.description }</div>
 	<div class="birthday" if={ user.profile.birthday }>
@@ -311,6 +313,7 @@
 		this.age = require('s-age');
 
 		this.mixin('i');
+		this.mixin('api');
 
 		this.user = this.opts.user;
 
@@ -325,6 +328,28 @@
 				user: this.user
 			});
 		};
+
+		this.mute = () => {
+			this.api('mute/create', {
+				user_id: this.user.id
+			}).then(() => {
+				this.user.is_muted = true;
+				this.update();
+			}, e => {
+				alert('error');
+			});
+		};
+
+		this.unmute = () => {
+			this.api('mute/delete', {
+				user_id: this.user.id
+			}).then(() => {
+				this.user.is_muted = false;
+				this.update();
+			}, e => {
+				alert('error');
+			});
+		};
 	</script>
 </mk-user-profile>
 
diff --git a/src/web/docs/api/entities/user.yaml b/src/web/docs/api/entities/user.yaml
index abc3f300d..e62ad84db 100644
--- a/src/web/docs/api/entities/user.yaml
+++ b/src/web/docs/api/entities/user.yaml
@@ -75,6 +75,12 @@ props:
     optional: true
     desc:
       ja: "自分がこのユーザーにフォローされているか"
+  - name: "is_muted"
+    type: "boolean"
+    optional: true
+    desc:
+      ja: "自分がこのユーザーをミュートしているか"
+      en: "Whether you muted this user"
   - name: "last_used_at"
     type: "date"
     optional: false
diff --git a/src/web/docs/mute.ja.pug b/src/web/docs/mute.ja.pug
new file mode 100644
index 000000000..4f5fad8b6
--- /dev/null
+++ b/src/web/docs/mute.ja.pug
@@ -0,0 +1,3 @@
+h1 ミュート
+
+p ユーザーをミュートすると、タイムラインや検索結果に対象のユーザーの投稿(およびそれらの投稿に対する返信やRepost)が表示されなくなります。