The invention provides a dynamic 
face analysis and identification method, device and 
system based on a B / S mode. The dynamic 
face analysis and identification method comprises that a 
Web server sends an 
uniform resource locator (URL) link of an ActiveX control with a 
face detection and tracking function to a Web 
client; the Web 
client opens the URL link through a 
web browser and downloads and installs the ActiveX control; a video 
stream is read in dependence on the ActiveX control; the face in the video 
stream is detected and tracked, after being acquired, a face image is return to the 
Web server; when receiving the face image returned by the Web 
client, the 
Web server analyzes and identifies the face image, and obtains an analysis and identification result and sends the result to the Web client. In this way, a .
net framework does not need to be installed on the Web client, and the Web client can access the Web 
server only based on the browser to achieve analysis and identification of face images, and therefore the user can use the dynamic 
face analysis and 
identification system conveniently, and the dynamic face analysis and 
identification system is simple to maintain and low in cost.