Abstract: To improve sign language synthesis systems which can read and understand,to obtain more convenient access to the real man-machine interaction means,based on the statistical model of the Chinese sign language rhythm method,by tracking video sign language movements,and analyzing the expression of sign language prosodic features,the sign language synchronized parameters were collected.In order to be more authentic and accurate to information rhythm,based on sign language expression limb joints at different parts of the right wrist and elbow rhythm,independent study were conducted.In addition,this paper introduces a system of sign language synthesis of the key technology and process integrity.Experiment results show that the statistical model based on the rhythm method can get more effective feature parameters of rhythm changes,and simulate the rhythm through sign language synthesis system.