Abstract.Research is carried out on the kinematics of a kind of small biped robot. The robot mechanical structure with six degrees of freedom is designed according to the bionic human body and the kinematical model of the robot is constructed through the transformation Matrix. In the inverse kinematical analysis, the relevant values are calculated. Finally, the experimental research is carried out. Results show that the robot can successfully realize walking, which proves the correctness of the kinematical analysis method in the paper.