Abstract: Video shot boundary detection is the precondition of video indexing and retrieval based on content. The Paper presents a fast algorithm for shot boundary detection using DCT coefficient and motion information in MPEG compressed video. At first, shot boundary is judged using the feature difference value between DC images of neighboring I frame; feature difference threshold may be self-adaptively regulated; And then, shot boundary is located precisely in GOP using motion information of B frame. Experiments result show that it can detect shot boundary quickly and exactly from compressed video.