Abstract: Walking is the basic movement, and the biomechanical study of the abnormal gait can effectively help the diagnosis, treatment and rehabilitation of related patients. Based on the current literature, the hemiplegic gait is taken as an example to discuss the research progress of the gait analysis: the new trends of research on the coupling modeling of the human body dynamics and the bone finite element include the application of the image analysis to the quantitative study of kinematics, the application of the electromyogram, the dynamometer and the reverse dynamics to the quantitative study of dynamics, as well as the quantitative study of the lower limb muscle strength by dynamic modeling and simulation. The research of the norm of the abnormal gait dynamic data is especially discussed.