The designed antikink systems of two sets of hydraulic system had the following 3 running modes: normal mode, fault mode and antikink mode. A set of antikink system that was used on Mc1 train and T train was taken as the research object. The two sets of antikink system were simulated with the software AMESim. The displacement of Mc1 train’〖KG-*2〗s hydraulic cylinder piston and T train’〖KG-*2〗s hydraulic cylinder piston, and the peak of the force of Mc1 train’〖KG-*2〗s hydraulic cylinder piston were compared when they were operated at the normal mode. The second design scheme was the optimal one and it was discussed deeply.