Abstract: A brief introduction to the pull-push air cushion platform developed by Jilin University of Technolog was given in the paper. The motion type of the unconventional ground traveling vehicle was defined and the kinematics of the machine was analyzed in the paper. The air cushion is composed of two tandem platforms with the same structure, which are connected with hydraulic mechanism. The front platform as base platform & the behind platform as moving platform are mutually fixed, which are pushed or pulled by hydraulic mechanism.