Multiview video compress (MVC) provide s high compression efficiency for the multi-view video coding,and as a result,suffers higher possibility of entire frame loss.To solve this problem ,this paper proposes a novel error concealment algorithm based on four ref erence frames.Firstly,within the lost frame′s view,adjacent frames are extrapolated to the lost fr ame along their motion vectors to get the optimal motion vectors of the lost frame.And then,optimal disparity can also be obtained by the same approach.An compromise based on the size of overlapping are a has been proposed to choose the better error concealment mode between intraview error concealment and interview error concealment.Finally,this paper introduces new block modes for the corrupt frame except for traditional size 4×4to combine smaller blocks with the same error concealment mode and similar motion vectors(disparities),and ultimately,mitigates blocking artifacts.Simulat ion results illustrate that the proposed method can gain a peak signal-to-noise ratio (PSN R) of 2.73dB higher than the conventional motion copy method on average,and of up to 1.92dB higher than conventional motion vect or extrapolation method.Compared with existing methods with the same computation complexi ty,the proposed algorithm takes advantage of the mechanics of MVC efficiently and performs ameli orative objective indicators and has better subjective quality for the concealed frame as well.