diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1139707b5..ef9934f6d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,7 +11,9 @@
 
 ### Improvements
 - クライアント: ユーザーのリアクション一覧を見れるように
+- クライアント: ユーザー検索の精度を強化
 - API: ユーザーのリアクション一覧を取得する users/reactions を追加
+- API: users/search および users/search-by-username-and-host を強化
 
 ### Bugfixes
 
diff --git a/src/client/components/form/radios.vue b/src/client/components/form/radios.vue
index 1d3d80172..998a73820 100644
--- a/src/client/components/form/radios.vue
+++ b/src/client/components/form/radios.vue
@@ -22,7 +22,6 @@ export default defineComponent({
 		}
 	},
 	render() {
-		const label = this.$slots.desc();
 		let options = this.$slots.default();
 
 		// なぜかFragmentになることがあるため
@@ -31,7 +30,6 @@ export default defineComponent({
 		return h('div', {
 			class: 'novjtcto'
 		}, [
-			h('div', { class: 'label' }, label),
 			...options.map(option => h(MkRadio, {
 				key: option.key,
 				value: option.props.value,
@@ -45,16 +43,6 @@ export default defineComponent({
 
 <style lang="scss">
 .novjtcto {
-	> .label {
-		font-size: 0.85em;
-		padding: 0 0 8px 12px;
-		user-select: none;
-
-		&:empty {
-			display: none;
-		}
-	}
-
 	&:first-child {
 		margin-top: 0;
 	}
diff --git a/src/client/pages/explore.vue b/src/client/pages/explore.vue
index 2ca066861..596bc1f0e 100644
--- a/src/client/pages/explore.vue
+++ b/src/client/pages/explore.vue
@@ -65,13 +65,18 @@
 			</div>
 			<div v-else-if="tab === 'search'">
 				<div class="_isolated">
-					<MkInput v-model="query" :debounce="true" type="search">
+					<MkInput v-model="searchQuery" :debounce="true" type="search">
 						<template #prefix><i class="fas fa-search"></i></template>
 						<template #label>{{ $ts.searchUser }}</template>
 					</MkInput>
+					<MkRadios v-model="searchScope">
+						<option value="local">{{ $ts.local }}</option>
+						<option value="remote">{{ $ts.remote }}</option>
+						<option value="both">{{ $ts.both }}</option>
+					</MkRadios>
 				</div>
 
-				<XUserList v-if="query" class="_gap" :pagination="searchPagination" ref="search"/>
+				<XUserList v-if="searchQuery" class="_gap" :pagination="searchPagination" ref="search"/>
 			</div>
 		</div>
 	</MkSpacer>
@@ -83,6 +88,7 @@ import { computed, defineComponent } from 'vue';
 import XUserList from '@client/components/user-list.vue';
 import MkFolder from '@client/components/ui/folder.vue';
 import MkInput from '@client/components/form/input.vue';
+import MkRadios from '@client/components/form/radios.vue';
 import number from '@client/filters/number';
 import * as os from '@client/os';
 import * as symbols from '@client/symbols';
@@ -92,6 +98,7 @@ export default defineComponent({
 		XUserList,
 		MkFolder,
 		MkInput,
+		MkRadios,
 	},
 
 	props: {
@@ -158,14 +165,16 @@ export default defineComponent({
 			searchPagination: {
 				endpoint: 'users/search',
 				limit: 10,
-				params: computed(() => (this.query && this.query !== '') ? {
-					query: this.query
+				params: computed(() => (this.searchQuery && this.searchQuery !== '') ? {
+					query: this.searchQuery,
+					scope: this.searchScope,
 				} : null)
 			},
 			tagsLocal: [],
 			tagsRemote: [],
 			stats: null,
-			query: null,
+			searchQuery: null,
+			searchScope: 'both',
 			num: number,
 		};
 	},
diff --git a/src/server/api/endpoints/users/search-by-username-and-host.ts b/src/server/api/endpoints/users/search-by-username-and-host.ts
index b9fbf48fb..8fdc71065 100644
--- a/src/server/api/endpoints/users/search-by-username-and-host.ts
+++ b/src/server/api/endpoints/users/search-by-username-and-host.ts
@@ -1,6 +1,8 @@
 import $ from 'cafy';
 import define from '../../define';
 import { Users } from '@/models/index';
+import { Brackets } from 'typeorm';
+import { USER_ACTIVE_THRESHOLD } from '@/const';
 
 export const meta = {
 	tags: ['users'],
@@ -64,8 +66,11 @@ export default define(meta, async (ps, me) => {
 			.where('user.host IS NULL')
 			.andWhere('user.isSuspended = FALSE')
 			.andWhere('user.usernameLower like :username', { username: ps.username.toLowerCase() + '%' })
-			.andWhere('user.updatedAt IS NOT NULL')
-			.orderBy('user.updatedAt', 'DESC')
+			.andWhere(new Brackets(qb => { qb
+				.where('user.lastActiveDate IS NULL')
+				.orWhere('user.lastActiveDate > :activeThreshold', { activeThreshold: new Date(Date.now() - USER_ACTIVE_THRESHOLD) });
+			}))
+			.orderBy('user.lastActiveDate', 'DESC', 'NULLS LAST')
 			.take(ps.limit!)
 			.skip(ps.offset)
 			.getMany();
diff --git a/src/server/api/endpoints/users/search.ts b/src/server/api/endpoints/users/search.ts
index 8011d90b3..e4fbfedd1 100644
--- a/src/server/api/endpoints/users/search.ts
+++ b/src/server/api/endpoints/users/search.ts
@@ -2,6 +2,8 @@ import $ from 'cafy';
 import define from '../../define';
 import { UserProfiles, Users } from '@/models/index';
 import { User } from '@/models/entities/user';
+import { Brackets } from 'typeorm';
+import { USER_ACTIVE_THRESHOLD } from '@/const';
 
 export const meta = {
 	tags: ['users'],
@@ -23,9 +25,9 @@ export const meta = {
 			default: 10,
 		},
 
-		localOnly: {
-			validator: $.optional.bool,
-			default: false,
+		scope: {
+			validator: $.optional.str.or(['local', 'remote', 'both']),
+			default: 'both',
 		},
 
 		detail: {
@@ -51,58 +53,91 @@ export default define(meta, async (ps, me) => {
 	let users: User[] = [];
 
 	if (isUsername) {
-		users = await Users.createQueryBuilder('user')
-			.where('user.host IS NULL')
-			.andWhere('user.isSuspended = FALSE')
-			.andWhere('user.usernameLower like :username', { username: ps.query.replace('@', '').toLowerCase() + '%' })
-			.andWhere('user.updatedAt IS NOT NULL')
-			.orderBy('user.updatedAt', 'DESC')
-			.take(ps.limit!)
-			.skip(ps.offset)
-			.getMany();
+		const usernameQuery = Users.createQueryBuilder('user')
+			.where('user.usernameLower like :username', { username: ps.query.replace('@', '').toLowerCase() + '%' })
+			.andWhere(new Brackets(qb => { qb
+				.where('user.lastActiveDate IS NULL')
+				.orWhere('user.lastActiveDate > :activeThreshold', { activeThreshold: new Date(Date.now() - USER_ACTIVE_THRESHOLD) });
+			}))
+			.andWhere('user.isSuspended = FALSE');
 
-		if (users.length < ps.limit! && !ps.localOnly) {
-			const otherUsers = await Users.createQueryBuilder('user')
-				.where('user.host IS NOT NULL')
-				.andWhere('user.isSuspended = FALSE')
-				.andWhere('user.usernameLower like :username', { username: ps.query.replace('@', '').toLowerCase() + '%' })
-				.andWhere('user.updatedAt IS NOT NULL')
-				.orderBy('user.updatedAt', 'DESC')
-				.take(ps.limit! - users.length)
-				.getMany();
-
-			users = users.concat(otherUsers);
+		if (ps.scope === 'local') {
+			usernameQuery
+				.andWhere('user.host IS NULL')
+				.orderBy('user.lastActiveDate', 'DESC', 'NULLS LAST');
+		} else if (ps.scope === 'remote') {
+			usernameQuery
+				.andWhere('user.host IS NOT NULL')
+				.orderBy('user.updatedAt', 'DESC', 'NULLS LAST');
+		} else { // both
+			usernameQuery
+				.orderBy('user.updatedAt', 'DESC', 'NULLS LAST');
 		}
-	} else {
-		const profQuery = UserProfiles.createQueryBuilder('prof')
-			.select('prof.userId')
-			.where('prof.userHost IS NULL')
-			.andWhere('prof.description ilike :query', { query: '%' + ps.query + '%' });
 
-		users = await Users.createQueryBuilder('user')
-			.where(`user.id IN (${ profQuery.getQuery() })`)
-			.setParameters(profQuery.getParameters())
-			.andWhere('user.updatedAt IS NOT NULL')
-			.orderBy('user.updatedAt', 'DESC')
+		users = await usernameQuery
+			.take(ps.limit!)
+			.skip(ps.offset)
+			.getMany();
+	} else {
+		const nameQuery = Users.createQueryBuilder('user')
+			.where('user.name ilike :query', { query: '%' + ps.query + '%' })
+			.andWhere(new Brackets(qb => { qb
+				.where('user.lastActiveDate IS NULL')
+				.orWhere('user.lastActiveDate > :activeThreshold', { activeThreshold: new Date(Date.now() - USER_ACTIVE_THRESHOLD) });
+			}))
+			.andWhere('user.isSuspended = FALSE');
+
+		if (ps.scope === 'local') {
+			nameQuery
+				.andWhere('user.host IS NULL')
+				.orderBy('user.lastActiveDate', 'DESC', 'NULLS LAST');
+		} else if (ps.scope === 'remote') {
+			nameQuery
+				.andWhere('user.host IS NOT NULL')
+				.orderBy('user.updatedAt', 'DESC', 'NULLS LAST');
+		} else { // both
+			nameQuery
+				.orderBy('user.updatedAt', 'DESC', 'NULLS LAST');
+		}
+
+		users = await nameQuery
 			.take(ps.limit!)
 			.skip(ps.offset)
 			.getMany();
 
-		if (users.length < ps.limit! && !ps.localOnly) {
-			const profQuery2 = UserProfiles.createQueryBuilder('prof')
+		if (users.length < ps.limit!) {
+			const profQuery = UserProfiles.createQueryBuilder('prof')
 				.select('prof.userId')
-				.where('prof.userHost IS NOT NULL')
-				.andWhere('prof.description ilike :query', { query: '%' + ps.query + '%' });
+				.where('prof.description ilike :query', { query: '%' + ps.query + '%' });
 
-			const otherUsers = await Users.createQueryBuilder('user')
-				.where(`user.id IN (${ profQuery2.getQuery() })`)
-				.setParameters(profQuery2.getParameters())
-				.andWhere('user.updatedAt IS NOT NULL')
-				.orderBy('user.updatedAt', 'DESC')
-				.take(ps.limit! - users.length)
-				.getMany();
+			if (ps.scope === 'local') {
+				profQuery.andWhere('prof.userHost IS NULL');
+			} else if (ps.scope === 'remote') {
+				profQuery.andWhere('prof.userHost IS NOT NULL');
+			}
 
-			users = users.concat(otherUsers);
+			const query = Users.createQueryBuilder('user')
+				.where(`user.id IN (${ profQuery.getQuery() })`)
+				.andWhere(new Brackets(qb => { qb
+					.where('user.lastActiveDate IS NULL')
+					.orWhere('user.lastActiveDate > :activeThreshold', { activeThreshold: new Date(Date.now() - USER_ACTIVE_THRESHOLD) });
+				}))
+				.andWhere('user.isSuspended = FALSE')
+				.setParameters(profQuery.getParameters());
+
+			if (ps.scope === 'local') {
+				query.orderBy('user.lastActiveDate', 'DESC', 'NULLS LAST');
+			} else if (ps.scope === 'remote') {
+				query.orderBy('user.updatedAt', 'DESC', 'NULLS LAST');
+			} else { // both
+				query.orderBy('user.updatedAt', 'DESC', 'NULLS LAST');
+			}
+
+			users = users.concat(await query
+				.take(ps.limit!)
+				.skip(ps.offset)
+				.getMany()
+			);
 		}
 	}