diff --git a/locales/en-US.yml b/locales/en-US.yml
index a70eb2406f..a16bce60f9 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -2146,6 +2146,7 @@ _notification:
   reacted: "reacted to your post"
   renoted: "boosted your post"
   voted: "voted on your poll"
+  andCountUsers: "and {count} users {acted}"
   _types:
     all: "All"
     follow: "New followers"
@@ -2232,3 +2233,5 @@ autocorrectNoteLanguage: "Show a warning if the post language does not match the
 incorrectLanguageWarning: "It looks like your post is in {detected}, but you selected
   {current}.\nWould you like to set the language to {detected} instead?"
 noteEditHistory: "Post edit history"
+experimental: "Experimental"
+foldNotification: "Collapse notifications of the same type"
diff --git a/locales/zh-CN.yml b/locales/zh-CN.yml
index 0adb9b4ba1..b65e7c296e 100644
--- a/locales/zh-CN.yml
+++ b/locales/zh-CN.yml
@@ -1787,6 +1787,7 @@ _notification:
   reacted: 回应了您的帖子
   voted: 在您的问卷调查中投了票
   renoted: 转发了您的帖子
+  andCountUsers: "等 {count} 名用户{acted}"
 _deck:
   alwaysShowMainColumn: "总是显示主列"
   columnAlign: "列对齐"
@@ -2059,3 +2060,5 @@ autocorrectNoteLanguage: 当帖子语言不符合自动检测的结果的时候
 incorrectLanguageWarning: "看上去您帖子使用的语言是{detected}，但您选择的语言是{current}。\n要改为以{detected}发帖吗？"
 noteEditHistory: "帖子编辑历史"
 media: 媒体
+experimental: "实验性"
+foldNotification: "折叠同类型通知"
diff --git a/packages/client/src/components/MkNotificationFolded.vue b/packages/client/src/components/MkNotificationFolded.vue
new file mode 100644
index 0000000000..ad401df9a5
--- /dev/null
+++ b/packages/client/src/components/MkNotificationFolded.vue
@@ -0,0 +1,246 @@
+<template>
+	<div
+		ref="elRef"
+		v-size="{ max: [500, 450] }"
+		class="qglefbjs notification"
+		:class="notification.type"
+	>
+		<div class="meta">
+			<span class="info">
+				<span class="sub-icon" :class="notification.type">
+					<i
+						v-if="notification.type === 'renote'"
+						:class="icon('ph-rocket-launch', false)"
+					></i>
+					<XReactionIcon
+						v-else-if="
+							showEmojiReactions && notification.type === 'reaction'
+						"
+						ref="reactionRef"
+						:reaction="
+							notification.reaction
+								? notification.reaction.replace(
+										/^:(\w+):$/,
+										':$1@.:',
+									)
+								: notification.reaction
+						"
+						:custom-emojis="notification.note.emojis"
+						:no-style="true"
+					/>
+					<XReactionIcon
+						v-else-if="
+							!showEmojiReactions && notification.type === 'reaction'
+						"
+						:reaction="defaultReaction"
+						:no-style="true"
+					/>
+				</span>
+				<span class="avatars">
+					<MkAvatar
+						v-for="user in users"
+						class="avatar"
+						:user="user"
+					/>
+				</span>
+				<span class="text">
+					{{ getText() }}
+				</span>
+				
+			</span>
+			<MkTime
+				v-if="withTime"
+				:time="notification.createdAt"
+				class="time"
+			/>
+		</div>
+		<!-- <MkA
+				v-if="notification.type === 'reaction'"
+				class="text"
+				:to="notePage(notification.note)"
+				:title="getNoteSummary(notification.note)"
+			>
+				<Mfm
+					:text="getNoteSummary(notification.note)"
+					:plain="true"
+					:nowrap="!full"
+					:lang="notification.note.lang"
+					:custom-emojis="notification.note.emojis"
+				/>
+			</MkA> -->
+		<XNote
+			v-if="notification.type === 'renote'"
+			class="content"
+			:note="notification.note.renote"
+			:hide-footer="true"
+		/>
+		<XNote
+			v-else
+			class="content"
+			:note="notification.note"
+			:hide-footer="true"
+		/>
+	</div>
+</template>
+
+<script lang="ts" setup>
+import { onMounted, onUnmounted, ref } from "vue";
+import type { Connection } from "firefish-js/src/streaming";
+import type { Channels } from "firefish-js/src/streaming.types";
+import XReactionIcon from "@/components/MkReactionIcon.vue";
+import XReactionTooltip from "@/components/MkReactionTooltip.vue";
+import { i18n } from "@/i18n";
+import * as os from "@/os";
+import { useStream } from "@/stream";
+import { useTooltip } from "@/scripts/use-tooltip";
+import { defaultStore } from "@/store";
+import { instance } from "@/instance";
+import icon from "@/scripts/icon";
+import type {
+	NotificationFolded,
+	ReactionNotificationFolded,
+} from "@/types/notification";
+import XNote from "@/components/MkNote.vue";
+
+const props = withDefaults(
+	defineProps<{
+		notification: NotificationFolded;
+		withTime?: boolean;
+		full?: boolean;
+	}>(),
+	{
+		withTime: false,
+		full: false,
+	},
+);
+
+const stream = useStream();
+
+const elRef = ref<HTMLElement | null>(null);
+const reactionRef = ref<InstanceType<typeof XReactionIcon> | null>(null);
+
+const showEmojiReactions =
+	defaultStore.state.enableEmojiReactions ||
+	defaultStore.state.showEmojisInReactionNotifications;
+const defaultReaction = ["⭐", "👍", "❤️"].includes(instance.defaultReaction)
+	? instance.defaultReaction
+	: "⭐";
+
+const users = ref(props.notification.users.slice(0, 5));
+const userleft = ref(props.notification.users.length - users.value.length);
+
+let readObserver: IntersectionObserver | undefined;
+let connection: Connection<Channels["main"]> | null = null;
+
+function getText() {
+	let res = "";
+	switch (props.notification.type) {
+		case "renote":
+			res = i18n.ts._notification.renoted;
+			break;
+		case "reaction":
+			res = i18n.ts._notification.reacted;
+			break;
+	}
+	if (userleft.value > 0) {
+		res = i18n.t("_notification.andCountUsers", {
+			count: userleft.value,
+			acted: res,
+		});
+	}
+	return res;
+}
+
+useTooltip(reactionRef, (showing) => {
+	const n = props.notification as ReactionNotificationFolded;
+	os.popup(
+		XReactionTooltip,
+		{
+			showing,
+			reaction: n.reaction
+				? n.reaction.replace(/^:(\w+):$/, ":$1@.:")
+				: n.reaction,
+			emojis: n.note.emojis,
+			targetElement: reactionRef.value!.$el,
+		},
+		{},
+		"closed",
+	);
+});
+
+onMounted(() => {
+	const unreadNotifications = props.notification.notifications.filter(
+		(n) => !n.isRead,
+	);
+
+	readObserver = new IntersectionObserver((entries, observer) => {
+		if (!entries.some((entry) => entry.isIntersecting)) return;
+		for (const u of unreadNotifications) {
+			stream.send("readNotification", {
+				id: u.id,
+			});
+		}
+		observer.disconnect();
+	});
+
+	readObserver.observe(elRef.value!);
+
+	connection = stream.useChannel("main");
+	connection.on("readAllNotifications", () => readObserver!.disconnect());
+});
+
+onUnmounted(() => {
+	if (readObserver) readObserver.disconnect();
+	if (connection) connection.dispose();
+});
+</script>
+
+<style lang="scss" scoped>
+.qglefbjs {
+	position: relative;
+	box-sizing: border-box;
+	font-size: 0.9em;
+	overflow-wrap: break-word;
+	contain: content;
+
+	&.max-width_500px > .meta{
+		padding-block: 16px;
+		font-size: 0.9em;
+	}
+	&.max-width_450px > .meta {
+		padding: 12px 16px;
+	}
+
+	> .meta {
+		margin-top: 1px; // Otherwise it will cover the line
+		padding: 24px 32px 0 32px;
+		display: flex;
+		align-items: baseline;
+		white-space: nowrap;
+		> .info {
+			text-overflow: ellipsis;
+				white-space: nowrap;
+				min-width: 0;
+				overflow: hidden;
+			// flex-grow: 1;
+			// display: inline-flex;
+			> .sub-icon {
+				margin-right: 3px;
+				font-size: 14px;
+			}
+			> .avatars > .avatar {
+				width: 20px;
+				height: 20px;
+				margin-right: 5px;
+			}
+		}
+		> .time {
+			margin-left: auto;
+			// flex-grow: 0;
+			// flex-shrink: 0;
+			white-space: nowrap;
+			font-size: 0.9em;
+		}
+	}
+}
+</style>
diff --git a/packages/client/src/components/MkNotifications.vue b/packages/client/src/components/MkNotifications.vue
index 43669c6607..db00257cf8 100644
--- a/packages/client/src/components/MkNotifications.vue
+++ b/packages/client/src/components/MkNotifications.vue
@@ -13,13 +13,21 @@
 
 		<template #default="{ items: notifications }">
 			<XList
+				:items="convertNotification(notifications)"
 				v-slot="{ item: notification }"
 				class="elsfgstc"
-				:items="notifications"
 				:no-gap="true"
 			>
+				<XNotificationFolded
+					v-if="isFoldedNotification(notification)"
+					:key="'nf-' + notification.id"
+					:notification="notification"
+					:with-time="true"
+					:full="true"
+					class="_panel notification"
+				/>
 				<XNote
-					v-if="isNoteNotification(notification)"
+					v-else-if="isNoteNotification(notification)"
 					:key="'nn-' + notification.id"
 					:note="notification.note"
 					:collapsed-reply="
@@ -48,11 +56,15 @@ import MkPagination, {
 	type MkPaginationType,
 } from "@/components/MkPagination.vue";
 import XNotification from "@/components/MkNotification.vue";
+import XNotificationFolded from "@/components/MkNotificationFolded.vue";
 import XList from "@/components/MkDateSeparatedList.vue";
 import XNote from "@/components/MkNote.vue";
 import { useStream } from "@/stream";
 import { me } from "@/me";
 import { i18n } from "@/i18n";
+import type { NotificationFolded } from "@/types/notification";
+import { foldNotifications } from "@/scripts/fold";
+import { defaultStore } from "@/store";
 
 const props = defineProps<{
 	includeTypes?: (typeof notificationTypes)[number][];
@@ -63,9 +75,12 @@ const stream = useStream();
 
 const pagingComponent = ref<MkPaginationType<"i/notifications"> | null>(null);
 
+const FETCH_LIMIT = 50;
+
 const pagination = {
 	endpoint: "i/notifications" as const,
-	limit: 10,
+	limit: FETCH_LIMIT,
+	secondFetchLimit: FETCH_LIMIT,
 	params: computed(() => ({
 		includeTypes: props.includeTypes ?? undefined,
 		excludeTypes: props.includeTypes ? undefined : me?.mutingNotificationTypes,
@@ -81,6 +96,11 @@ function isNoteNotification(
 	| entities.MentionNotification {
 	return n.type === "reply" || n.type === "quote" || n.type === "mention";
 }
+function isFoldedNotification(
+	n: NotificationFolded | entities.Notification,
+): n is NotificationFolded {
+	return "folded" in n;
+}
 
 const onNotification = (notification: entities.Notification) => {
 	const isMuted = props.includeTypes
@@ -102,6 +122,14 @@ const onNotification = (notification: entities.Notification) => {
 
 let connection: StreamTypes.ChannelOf<"main"> | undefined;
 
+function convertNotification(n: entities.Notification[]) {
+	if (defaultStore.state.foldNotification) {
+		return foldNotifications(n, FETCH_LIMIT);
+	} else {
+		return n;
+	}
+}
+
 onMounted(() => {
 	connection = stream.useChannel("main");
 	connection.on("notification", onNotification);
diff --git a/packages/client/src/components/MkPagination.vue b/packages/client/src/components/MkPagination.vue
index 2f092cb8ad..dedd809732 100644
--- a/packages/client/src/components/MkPagination.vue
+++ b/packages/client/src/components/MkPagination.vue
@@ -117,6 +117,7 @@ export type PagingKey = PagingKeyOf<any>;
 export interface Paging<E extends PagingKey = PagingKey> {
 	endpoint: E;
 	limit: number;
+	secondFetchLimit?: number;
 	params?: Endpoints[E]["req"] | ComputedRef<Endpoints[E]["req"]>;
 
 	/**
@@ -141,7 +142,7 @@ export interface Paging<E extends PagingKey = PagingKey> {
 
 export type PagingOf<T> = Paging<TypeUtils.EndpointsOf<T[]>>;
 
-const SECOND_FETCH_LIMIT = 30;
+const SECOND_FETCH_LIMIT_DEFAULT = 30;
 
 const props = withDefaults(
 	defineProps<{
@@ -285,7 +286,8 @@ const fetchMore = async (): Promise<void> => {
 	await os
 		.api(props.pagination.endpoint, {
 			...params,
-			limit: SECOND_FETCH_LIMIT + 1,
+			limit:
+				(props.pagination.secondFetchLimit ?? SECOND_FETCH_LIMIT_DEFAULT) + 1,
 			...(props.pagination.offsetMode
 				? {
 						offset: offset.value,
@@ -312,7 +314,10 @@ const fetchMore = async (): Promise<void> => {
 						if (i === 10) item._shouldInsertAd_ = true;
 					}
 				}
-				if (res.length > SECOND_FETCH_LIMIT) {
+				if (
+					res.length >
+					(props.pagination.secondFetchLimit ?? SECOND_FETCH_LIMIT_DEFAULT)
+				) {
 					res.pop();
 					items.value = props.pagination.reversed
 						? res.toReversed().concat(items.value)
@@ -346,7 +351,8 @@ const fetchMoreAhead = async (): Promise<void> => {
 	await os
 		.api(props.pagination.endpoint, {
 			...params,
-			limit: SECOND_FETCH_LIMIT + 1,
+			limit:
+				(props.pagination.secondFetchLimit ?? SECOND_FETCH_LIMIT_DEFAULT) + 1,
 			...(props.pagination.offsetMode
 				? {
 						offset: offset.value,
@@ -361,7 +367,10 @@ const fetchMoreAhead = async (): Promise<void> => {
 		})
 		.then(
 			(res: Item[]) => {
-				if (res.length > SECOND_FETCH_LIMIT) {
+				if (
+					res.length >
+					(props.pagination.secondFetchLimit ?? SECOND_FETCH_LIMIT_DEFAULT)
+				) {
 					res.pop();
 					items.value = props.pagination.reversed
 						? res.toReversed().concat(items.value)
diff --git a/packages/client/src/pages/settings/general.vue b/packages/client/src/pages/settings/general.vue
index bc21efc132..52780d77b7 100644
--- a/packages/client/src/pages/settings/general.vue
+++ b/packages/client/src/pages/settings/general.vue
@@ -327,6 +327,13 @@
 			</FormSelect>
 		</FormSection>
 
+		<FormSection>
+			<template #label>{{ i18n.ts.experimental }}</template>
+			<FormSwitch v-model="foldNotification" class="_formBlock">{{
+				i18n.ts.foldNotification
+			}}</FormSwitch>
+		</FormSection>
+
 		<FormSection>
 			<template #label>{{ i18n.ts.forMobile }}</template>
 			<FormSwitch
@@ -542,6 +549,9 @@ const showAddFileDescriptionAtFirstPost = computed(
 const autocorrectNoteLanguage = computed(
 	defaultStore.makeGetterSetter("autocorrectNoteLanguage"),
 );
+const foldNotification = computed(
+	defaultStore.makeGetterSetter("foldNotification"),
+);
 
 // This feature (along with injectPromo) is currently disabled
 // function onChangeInjectFeaturedNote(v) {
@@ -610,6 +620,7 @@ watch(
 		enableTimelineStreaming,
 		enablePullToRefresh,
 		pullToRefreshThreshold,
+		foldNotification,
 	],
 	async () => {
 		await reloadAsk();
diff --git a/packages/client/src/scripts/fold.ts b/packages/client/src/scripts/fold.ts
new file mode 100644
index 0000000000..02755b1813
--- /dev/null
+++ b/packages/client/src/scripts/fold.ts
@@ -0,0 +1,100 @@
+import type {
+	FoldableNotification,
+	NotificationFolded,
+} from "@/types/notification";
+import type { entities } from "firefish-js";
+
+interface FoldOption {
+	/** If items length is 1, skip aggregation */
+	/** @default true */
+	skipSingleElement?: boolean;
+}
+
+/**
+ * Fold similar content
+ * @param ns items to fold
+ * @param fetch_limit fetch limit of pagination. items will be divided into subarrays with this limit as the length.
+ * @param classfier Classify the given item into a certain category (return a string representing the category)
+ * @param aggregator Aggregate items of the given class into itemfolded
+ * @returns folded items
+ */
+export function foldItems<ItemFolded, Item>(
+	ns: Item[],
+	fetch_limit: number,
+	classfier: (n: Item, index: number) => string,
+	aggregator: (ns: Item[], key: string) => ItemFolded,
+	_options?: FoldOption,
+) {
+	let res: (ItemFolded | Item)[] = [];
+
+	const options: FoldOption = _options ?? {};
+	options.skipSingleElement ??= true;
+
+	for (let i = 0; i < ns.length; i += fetch_limit) {
+		const toFold = ns.slice(i, i + fetch_limit);
+		const toAppendKeys: string[] = [];
+		const foldMap = new Map<string, Item[]>();
+
+		for (const [index, n] of toFold.entries()) {
+			const key = classfier(n, index);
+			const arr = foldMap.get(key);
+			if (arr != null) {
+				arr.push(n);
+			} else {
+				foldMap.set(key, [n]);
+				toAppendKeys.push(key);
+			}
+		}
+
+		res = res.concat(
+			toAppendKeys.map((key) => {
+				const arr = foldMap.get(key)!;
+				if (arr?.length === 1 && options?.skipSingleElement) {
+					return arr[0];
+				}
+				return aggregator(arr, key);
+			}),
+		);
+	}
+
+	return res;
+}
+
+export function foldNotifications(
+	ns: entities.Notification[],
+	fetch_limit: number,
+) {
+	return foldItems(
+		ns,
+		fetch_limit,
+		(n) => {
+			switch (n.type) {
+				case "renote":
+					return `renote-of:${n.note.renote.id}`;
+				case "reaction":
+					return `reaction:${n.reaction}:of:${n.note.id}`;
+				default: {
+					return `${n.id}`;
+				}
+			}
+		},
+		(ns) => {
+			const represent = ns[0];
+			function check(
+				ns: entities.Notification[],
+			): ns is FoldableNotification[] {
+				return represent.type === "renote" || represent.type === "reaction";
+			}
+			if (!check(ns)) {
+				return represent;
+			}
+			return {
+				...represent,
+				folded: true,
+				userIds: ns.map((nn) => nn.userId),
+				users: ns.map((nn) => nn.user),
+				notifications: ns!,
+			} as NotificationFolded;
+		},
+	);
+}
diff --git a/packages/client/src/store.ts b/packages/client/src/store.ts
index fed9acc035..e426438f92 100644
--- a/packages/client/src/store.ts
+++ b/packages/client/src/store.ts
@@ -450,6 +450,10 @@ export const defaultStore = markRaw(
 			where: "account",
 			default: true,
 		},
+		foldNotification: {
+			where: "device",
+			default: false,
+		},
 	}),
 );
 
diff --git a/packages/client/src/types/notification.ts b/packages/client/src/types/notification.ts
new file mode 100644
index 0000000000..954688021f
--- /dev/null
+++ b/packages/client/src/types/notification.ts
@@ -0,0 +1,31 @@
+import type { entities } from "firefish-js";
+
+export type FoldableNotification =
+	| entities.RenoteNotification
+	| entities.ReactionNotification;
+
+type Fold<T extends FoldableNotification> = {
+	id: string;
+	type: T["type"];
+	createdAt: T["createdAt"];
+	note: T["note"];
+	folded: true;
+	userIds: entities.User["id"][];
+	users: entities.User[];
+	notifications: T[];
+};
+
+export type RenoteNotificationFolded = Fold<entities.RenoteNotification>;
+
+export type ReactionNotificationFolded = Fold<entities.ReactionNotification> & {
+	reaction: string;
+};
+
+export type GetNotificationFoldedType<T extends FoldableNotification> =
+	T["type"] extends "renote"
+		? RenoteNotificationFolded
+		: ReactionNotificationFolded;
+
+export type NotificationFolded =
+	| RenoteNotificationFolded
+	| ReactionNotificationFolded;