diff --git a/src/server/api/common/generate-block-query.ts b/src/server/api/common/generate-block-query.ts
new file mode 100644
index 0000000000..3636410485
--- /dev/null
+++ b/src/server/api/common/generate-block-query.ts
@@ -0,0 +1,19 @@
+import { User } from '../../../models/entities/user';
+import { Blockings } from '../../../models';
+import { SelectQueryBuilder } from 'typeorm';
+
+export function generateBlockQueryForUsers(q: SelectQueryBuilder<any>, me: User) {
+	const blockingQuery = Blockings.createQueryBuilder('blocking')
+		.select('blocking.blockeeId')
+		.where('blocking.blockerId = :blockerId', { blockerId: me.id });
+
+	const blockedQuery = Blockings.createQueryBuilder('blocking')
+		.select('blocking.blockerId')
+		.where('blocking.blockeeId = :blockeeId', { blockeeId: me.id });
+
+	q.andWhere(`user.id NOT IN (${ blockingQuery.getQuery() })`);
+	q.setParameters(blockingQuery.getParameters());
+
+	q.andWhere(`user.id NOT IN (${ blockedQuery.getQuery() })`);
+	q.setParameters(blockedQuery.getParameters());
+}
diff --git a/src/server/api/endpoints/users/recommendation.ts b/src/server/api/endpoints/users/recommendation.ts
index 73d8fe6208..5f7f287fe8 100644
--- a/src/server/api/endpoints/users/recommendation.ts
+++ b/src/server/api/endpoints/users/recommendation.ts
@@ -3,6 +3,7 @@ import $ from 'cafy';
 import define from '../../define';
 import { Users, Followings } from '../../../../models';
 import { generateMuteQueryForUsers } from '../../common/generate-mute-query';
+import { generateBlockQueryForUsers } from '../../common/generate-block-query';
 
 export const meta = {
 	desc: {
@@ -47,6 +48,7 @@ export default define(meta, async (ps, me) => {
 		.orderBy('user.followersCount', 'DESC');
 
 	generateMuteQueryForUsers(query, me);
+	generateBlockQueryForUsers(query, me);
 
 	const followingQuery = Followings.createQueryBuilder('following')
 		.select('following.followeeId')