A scanning display device is disclosed. The scanning display device includes: first to M-th scan mirrors (where M is an integer of at least 2), each of which scans a light signal in a first direction; and a scanning unit for scanning the light signal scanned by each of the first to M-th scan mirrors in a second direction, wherein a m-th scan mirror (where 1≦m≦M−1) scans the light signal in the first direction, and a n-th scan mirror (where 2≦n≦M) adjacent to the m-th scan mirror scans the light signal scanned by the m-th scan mirror in the first direction.