The invention discloses a taking-out device of a plunger pump valve seat. The taking-out device comprises a mounting plate, supporting plates are symmetrically arranged on the two sides of the lower end of the mounting plate, supporting seats are arranged at the lower ends of the supporting plates, fixed wheels are arranged on the supporting seats, a moving plate is arranged at the upper end of the mounting plate in a sliding mode, a sliding groove hole is formed in the part, where the moving plate is located, of the mounting plate, a lifting device for lifting the plunger pump valve seat is arranged at the lower end of the moving plate, and a threaded transmission mechanism is arranged between the moving plate and the mounting plate. According to the taking-out device of the plunger pumpvalve seat, the moving plate can be driven to move left and right on the mounting plate through the threaded transmission mechanism so that the lifting device can be finely adjusted, the working efficiency of the device can be improved, and the practicability is high.