The invention provides a vertical dynamic load casing-pipe wear testing machine. The machine comprises a loading system, a rotating system, a shock excitation system, a clamping system and a rack, wherein the loading system comprises a front support seat, a rear support seat, a guide rail part and an elastic moving part; the guide rail part comprises a straight rail which is connected between the front support seat and the rear support seat; the straight rail is movably sleeved with the elastic moving part; a rotating motor is arranged on the rotating system and is fixed on the elastic moving part by virtue of a motor support, an output shaft at the lower end of the rotating motor is connected with a shaft coupler, a torque sensor and a drill pipe part sequentially downwards; the shock excitation system comprises a shock excitation motor which is fixed on the front support seat by virtue of a motor mounting frame, and an eccentric rotation part which is rotatably inserted into a through hole formed in the front support seat; the clamping system is positioned on the lower side of the guide rail part, and a hollow slurry tank, a platform part and a lift are arranged in the clamping system; the rack comprises a base and a plurality of front vertical upright posts, middle upright posts and rear upright posts, which are arranged on the base. The vertical dynamic load casing-pipe wear testing machine has a vertical structure, and the simulation on various kinds of wear working conditions between a casing pipe and a joint of a drill pipe is realized.