In order to solve the practical problem of the interruption of lines due to frequent snow in winter in a transport section, a track snow removal vehicle is designed and researched. On the basis of theoretical analysis of the general scheme of the hydraulic system in addition to snowmobile, the hydraulic system of track snow removal vehicle was designed. According to the performance index of track snow removal vehicle, the parameters of main components of the hydraulic system of track snow removal vehicle were designed. Using hydraulic numerical analysis software AMESim, the driving hydraulic system of track snow removal vehicle was numerically analyzed. The changes of flow and speed of the driving variable pump, variable motor and oil supplement pump were shown intuitively by the numerical analysis curve. Comparing the simulation parameters and numerical results, the absolute value of maximum relative error of the two was less than 2%. The field test shows that the driving hydraulic system of the track snow vehicle removal is stable, the track snow removal vehicle can work well and can meet the target of the track snow removal vehicle.