Aiming at some defect in pixel domain and the MPEG compressed domain for shot boundary detection，making full use of new characteristics of the H.264/AVC video coding standard，in this paper，we present a shot boundary detection method based on the H.264/AVC compressed domain.Firstly，the frame should be decomposed into 4×4 blocks，and then the difference information between the corresponding blocks in the intra-prediction mode or the inter-prediction mode is counted up.At last，the shot boundary detection is accomplished for different types of video by using adaptive threshold decision.Experimental results show that the proposed method achieves satisfactory performance of recall and precision.