The principle of hydraulic system of pushing mechanism was analyzed. The hydraulic control system of the pushing mechanism was designed on this basis. According to the hydraulic schematic diagram, working process and main components of the hydraulic control system of the mechanism were introduced. The simulation model was established in AMESim, and the dynamic characteristics of the hydraulic system were analyzed. According to the simulation results, suggestion of improving dynamic performance of existing system was presented, and shortage of original design was made up.