A dynamic water erosion environment sealing and leak stopping simulation tester comprises a simulation leak stopping instrument, a first water storage tank and a second water storage tank; the simulation leak stopping instrument is composed of a horizontal pipe and a vertical pipe inserted into the center of the horizontal pipe; the external diameter of the vertical pipe is less than the internal diameter of the horizontal pipe; a portion, position in the horizontal pipe, of the vertical pipe is provided with a plurality of through holes; the first water storage tank is connected with one end of the horizontal pipe and a connecting pipe is provided with a first valve, and a joint position is provided with a first adapter; the second water storage tank is connected with the other end of the horizontal pipe and another connecting pipe is provided with a second valve, and another joint position is provided a second adapter; an upper end of the vertical pipe is connected with a high temperature maintenance tank; and a lower end of the vertical pipe is disposed on a second pedestal. The dynamic water erosion environment sealing and leak stopping simulation tester is simple in structure, high in efficiency, good in reappearance, low in cost, simple in operation and convenient to maintain, and is portable, and slurry materials can be saved.