diff --git a/packages/backend/src/core/NoteCreateService.ts b/packages/backend/src/core/NoteCreateService.ts
index 345367f05..f03316744 100644
--- a/packages/backend/src/core/NoteCreateService.ts
+++ b/packages/backend/src/core/NoteCreateService.ts
@@ -816,7 +816,16 @@ export class NoteCreateService implements OnApplicationShutdown {
 
 				// Notify
 				if (data.renote.userHost === null) {
-					nm.push(data.renote.userId, type);
+					const isThreadMuted = await this.noteThreadMutingsRepository.exist({
+						where: {
+							userId: data.renote.userId,
+							threadId: data.renote.threadId ?? data.renote.id,
+						},
+					});
+
+					if (!isThreadMuted) {
+						nm.push(data.renote.userId, type);
+					}
 				}
 
 				// Publish event