diff --git a/packages/frontend/src/components/MkReactionsViewer.reaction.vue b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
index 951447f15a..204a011d6e 100644
--- a/packages/frontend/src/components/MkReactionsViewer.reaction.vue
+++ b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
@@ -22,6 +22,7 @@ import { computed, inject, onMounted, useTemplateRef, watch } from 'vue';
 import * as Misskey from 'misskey-js';
 import { getUnicodeEmoji } from '@@/js/emojilist.js';
 import MkCustomEmojiDetailedDialog from './MkCustomEmojiDetailedDialog.vue';
+import type { MenuItem } from '@/types/menu';
 import XDetails from '@/components/MkReactionsViewer.details.vue';
 import MkReactionIcon from '@/components/MkReactionIcon.vue';
 import * as os from '@/os.js';
@@ -36,6 +37,7 @@ import { checkReactionPermissions } from '@/utility/check-reaction-permissions.j
 import { customEmojisMap } from '@/custom-emojis.js';
 import { prefer } from '@/preferences.js';
 import { DI } from '@/di.js';
+import { mute as muteEmoji, unmute as unmuteEmoji, checkMuted as isEmojiMuted } from '@/utility/emoji-mute.js';
 
 const props = defineProps<{
 	reaction: string;
@@ -59,6 +61,7 @@ const canToggle = computed(() => {
 	return !props.reaction.match(/@\w/) && $i && emoji.value && checkReactionPermissions($i, props.note, emoji.value);
 });
 const canGetInfo = computed(() => !props.reaction.match(/@\w/) && props.reaction.includes(':'));
+const isLocalCustomEmoji = props.reaction[0] === ':' && props.reaction.includes('@.');
 
 async function toggleReaction() {
 	if (!canToggle.value) return;
@@ -118,21 +121,55 @@ async function toggleReaction() {
 }
 
 async function menu(ev) {
-	if (!canGetInfo.value) return;
+	let menuItems: MenuItem[] = [];
 
-	os.popupMenu([{
-		text: i18n.ts.info,
-		icon: 'ti ti-info-circle',
-		action: async () => {
-			const { dispose } = os.popup(MkCustomEmojiDetailedDialog, {
-				emoji: await misskeyApiGet('emoji', {
-					name: props.reaction.replace(/:/g, '').replace(/@\./, ''),
-				}),
-			}, {
-				closed: () => dispose(),
-			});
-		},
-	}], ev.currentTarget ?? ev.target);
+	if (canGetInfo.value) {
+		menuItems.push({
+			text: i18n.ts.info,
+			icon: 'ti ti-info-circle',
+			action: async () => {
+				const { dispose } = os.popup(MkCustomEmojiDetailedDialog, {
+					emoji: await misskeyApiGet('emoji', {
+						name: props.reaction.replace(/:/g, '').replace(/@\./, ''),
+					}),
+				}, {
+					closed: () => dispose(),
+				});
+			},
+		});
+	}
+
+	if (isEmojiMuted(props.reaction).value) {
+		menuItems.push({
+			text: i18n.ts.unmute,
+			icon: 'ti ti-mood-smile',
+			action: () => {
+				os.confirm({
+					type: 'question',
+					title: i18n.tsx.unmuteX({ x: isLocalCustomEmoji ? `:${emojiName.value}:` : props.reaction }),
+				}).then(({ canceled }) => {
+					if (canceled) return;
+					unmuteEmoji(props.reaction);
+				});
+			},
+		});
+	} else {
+		menuItems.push({
+			text: i18n.ts.mute,
+			icon: 'ti ti-mood-off',
+			action: () => {
+				os.confirm({
+					type: 'question',
+					title: i18n.tsx.muteX({ x: isLocalCustomEmoji ? `:${emojiName.value}:` : props.reaction }),
+				}).then(({ canceled }) => {
+					if (canceled) return;
+					muteEmoji(props.reaction);
+				});
+			},
+		});
+	}
+
+	os.popupMenu(menuItems, ev.currentTarget ?? ev.target);
 }
 
 function anime() {
diff --git a/packages/frontend/src/components/global/MkCustomEmoji.vue b/packages/frontend/src/components/global/MkCustomEmoji.vue
index ee84f96224..8f03d194b1 100644
--- a/packages/frontend/src/components/global/MkCustomEmoji.vue
+++ b/packages/frontend/src/components/global/MkCustomEmoji.vue
@@ -60,7 +60,7 @@ const react = inject(DI.mfmEmojiReactCallback);
 const customEmojiName = computed(() => (props.name[0] === ':' ? props.name.substring(1, props.name.length - 1) : props.name).replace('@.', ''));
 const isLocal = computed(() => !props.host && (customEmojiName.value.endsWith('@.') || !customEmojiName.value.includes('@')));
 const emojiCodeToMute = makeEmojiMuteKey(props);
-const isMuted = computed(() => checkEmojiMuted(emojiCodeToMute));
+const isMuted = checkEmojiMuted(emojiCodeToMute);
 const shouldMute = computed(() => !props.ignoreMuted && isMuted.value);
 
 const rawUrl = computed(() => {
@@ -174,9 +174,12 @@ async function edit(name: string) {
 }
 
 function mute() {
+	const titleEmojiName = isLocal.value
+		? `:${customEmojiName.value}:`
+		: emojiCodeToMute;
 	os.confirm({
 		type: 'question',
-		title: i18n.tsx.muteX({ x: emojiCodeToMute }),
+		title: i18n.tsx.muteX({ x: titleEmojiName }),
 	}).then(({ canceled }) => {
 		if (canceled) {
 			return;
diff --git a/packages/frontend/src/pages/settings/mute-block.emoji-mute.vue b/packages/frontend/src/pages/settings/mute-block.emoji-mute.vue
index e269cda0c5..e4df442c22 100644
--- a/packages/frontend/src/pages/settings/mute-block.emoji-mute.vue
+++ b/packages/frontend/src/pages/settings/mute-block.emoji-mute.vue
@@ -34,24 +34,15 @@ import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
 import { i18n } from '@/i18n.js';
 import { prefer } from '@/preferences.js';
-import { mute as muteEmoji, unmute as unmuteEmoji, checkMuted as isMuted } from '@/utility/emoji-mute.js';
+import {
+	mute as muteEmoji,
+	unmute as unmuteEmoji,
+	extractCustomEmojiName as customEmojiName,
+	extractCustomEmojiHost as customEmojiHost,
+} from '@/utility/emoji-mute.js';
 
 const emojis = prefer.model('mutingEmojis');
 
-function customEmojiName (name:string) {
-	return (name[0] === ':' ? name.substring(1, name.length - 1) : name).replace('@.', '').split('@')[0];
-}
-
-function customEmojiHost (name:string) {
-	// nameは:emojiName@host:の形式
-	// 取り出したい部分はhostなので、@以降を取り出す
-	const index = name.indexOf('@');
-	if (index === -1) {
-		return null;
-	}
-	return name.substring(index + 1, name.length - 1);
-}
-
 function getHTMLElement(ev: MouseEvent): HTMLElement {
 	const target = ev.currentTarget ?? ev.target;
 	return target as HTMLElement;
diff --git a/packages/frontend/src/utility/emoji-mute.ts b/packages/frontend/src/utility/emoji-mute.ts
index 759515f166..0693c5d473 100644
--- a/packages/frontend/src/utility/emoji-mute.ts
+++ b/packages/frontend/src/utility/emoji-mute.ts
@@ -11,22 +11,50 @@ export function makeEmojiMuteKey(props: { name: string; host?: string | null })
 	return props.name.startsWith(':') ? props.name : `:${props.name}${props.host ? `@${props.host}` : ''}:`;
 }
 
+export function extractCustomEmojiName (name:string) {
+	return (name[0] === ':' ? name.substring(1, name.length - 1) : name).replace('@.', '').split('@')[0];
+}
+
+export function extractCustomEmojiHost (name:string) {
+	// nameは:emojiName@host:の形式
+	// 取り出したい部分はhostなので、@以降を取り出す
+	const index = name.indexOf('@');
+	if (index === -1) {
+		return null;
+	}
+	const host = name.substring(index + 1, name.length - 1);
+	if (host === '' || host === '.') {
+		return null;
+	}
+	return host;
+}
+
 export function mute(emoji: string) {
+	const isCustomEmoji = emoji.startsWith(':') && emoji.endsWith(':');
+	const emojiMuteKey = isCustomEmoji ?
+		makeEmojiMuteKey({ name: extractCustomEmojiName(emoji), host: extractCustomEmojiHost(emoji) }) :
+		emoji;
 	const mutedEmojis = prefer.r.mutingEmojis.value;
 	if (!mutedEmojis.includes(emoji)) {
-		prefer.commit('mutingEmojis', [...mutedEmojis, emoji]);
+		prefer.commit('mutingEmojis', [...mutedEmojis, emojiMuteKey]);
 	}
 }
 
 export function unmute(emoji:string) {
+	const isCustomEmoji = emoji.startsWith(':') && emoji.endsWith(':');
+	const emojiMuteKey = isCustomEmoji ?
+		makeEmojiMuteKey({ name: extractCustomEmojiName(emoji), host: extractCustomEmojiHost(emoji) }) :
+		emoji;
 	const mutedEmojis = prefer.r.mutingEmojis.value;
-	const index = mutedEmojis.indexOf(emoji);
-	if (index !== -1) {
-		mutedEmojis.splice(index, 1);
-		prefer.commit('mutingEmojis', mutedEmojis);
-	}
+	console.log('unmute', emoji, emojiMuteKey);
+	console.log('mutedEmojis', mutedEmojis);
+	prefer.commit('mutingEmojis', mutedEmojis.filter((e) => e !== emojiMuteKey));
 }
 
 export function checkMuted(emoji: string) {
-	return computed(() => prefer.r.mutingEmojis.value.includes(emoji));
+	const isCustomEmoji = emoji.startsWith(':') && emoji.endsWith(':');
+	const emojiMuteKey = isCustomEmoji ?
+		makeEmojiMuteKey({ name: extractCustomEmojiName(emoji), host: extractCustomEmojiHost(emoji) }) :
+		emoji;
+	return computed(() => prefer.r.mutingEmojis.value.includes(emojiMuteKey));
 }