Abstract:The three-dimensional model of triplex plunger pump was built. ADAMS software was used to make dynamic simulation analysis. The displacement, velocity and acceleration curves of the triplex plunger pump plunger were obtained, as well as the force, load, crankshaft torque curves. According to the above curves, the movement smoothness of the triplex plunger pump can be evaluated.It provides reference for subsequent finite element analysis, product optimization design.