This paper proposes a novel method to realize naked-eye stereoscopic display based on DLP. The method we proposed is different from grating method used widely, it based on the DLP image-forming principle, two DMD chips are appllied instead of single DMD. The stereoscopic image pairs are intersected sequentially and projected to different orientation by each DMD. To separate the left and right video, lens is used and located before the screen. Left eye and right eye can receive corresponding frame individually. Some experimental results are given to demonstrate the proposed technology at last.