The multiview video coding (MVC) adopts the exhaustive mode decision to achieve high efficiency,at the price of extremely high computational complexi ty.Compared with the macroblock (MB) mode, the large MB mode (SKIP/DIRECT,inter 16×16) occupies most of the MB mode propor tion,while its estimation consumes much less computational complexity than that of other modes.By using t emporal and interview correlation between current MB and its adjacent MBs,a fast mode decision for MV C based on transition probability is proposed in this paper.By utilizing the geometric relationship b etween the current MB and the corresponding coded MBs in the temporal and the interview frames,the MB mode re ference model is firstly established.Compared with the temporal and interview mode similarity of the mod e reference model,the transition probability between two modes is secondly calculated.Lastly,the th reshold is obtained to terminate the process of the large MB mode decision.The experimental results show t hat compared with the exhaustive mode decision in MVC,the fast mode decision algorithm for MVC can ac hieve a reduction of the computational complexity by 80.93% in average encoding time,while incurring only 0.04dB loss in peak signal-to-noise ratio (PSNR) and 0.27% increment in th e total bit rate (BR).