The invention discloses a high-flux police dynamic face acquisition comparison method and system. The method comprises the following steps: 1, rapidly detecting and snapshooting dynamic faces; 2, performing background system analysis; 3, performing three-dimensional rectification restoration; and 4, performing image preprocessing, feature extraction and comparison. According to the high-flux police dynamic face acquisition comparison method and system related to by the invention, for such features as many police portrait data image types, large quality differences, large data scale, diversified application scenes and the like, through a high-accuracy and rapid portrait feature extraction and comparison method, in a portrait comparison process, image deviations generated by the faces due to postures, decorations, illumination, focusing and the like are overcome, rapid and accurate comparison of face features is realized, a face identification technology is enabled to play an important role in actual application, and the method and system have application prospect.