During designs of rail vehicles， modeling is complicated and the period is long for finite element collision simulation. In order to calculate accurate train collision response quickly， a parameterized train collision platform is established based on vehicle-track coupled dynamics and Matlab. The physical vehicle model is converted into a mathematical model according to actual parameters， and the continuous track model is discretized into an elastic point support model； the vector method is used to establish the wheel-rail interaction model based on Hertz contact theory； the coupler buffer device， energy absorption anti-climbing device， suspension device， and the mechanical characteristics of the model are transformed into a mathematical model of nonlinear hysteresis characteristics. A modified two-step explicit integration algorithm is used to solve the parameterized model in time domain. By comparing the finite element simulation results with the parametric simulation results in terms of speed， acceleration， and maximum wheel lift， the results show that two different models have the same speed change trend， the absolute error of acceleration is less than 1m/s²， and the relative error of the peak lift amount of the wheelset is 1.67%. The relative error of each index was kept within 10%， and the accuracy of the parameterized train collision platform is verified. The results establish a simulation basis for revealing the response mechanism of a train after a collision， and provide a certain theoretical support for selecting parameters in the crashworthiness design of rail vehicles.