The invention provides an automatic stamping robot. The automatic stamping robot comprises a robot base. A left lifting device is arranged on one side of the robot base, and a right lifting device isarranged on the other side of the robot base. The left lifting device and the right lifting device are arranged in parallel. Lifting device fixing plates are arranged at the upper ends of the left lifting device and the right lifting device. A dustproof supporting plate is arranged between the lifting device fixing plates of the left lifting device and the right lifting device. A lifting plate isarranged between the left lifting device and the right lifting device. A seal fixing seat is arranged on the lifting plate. The seal fixing seat is mounted on the lifting plate through a fixing seat clamp. A seal is arranged at the lower end of the seal fixing seat. A paper conveyor belt is arranged on the lower side of the seal. The automatic stamping robot can automatically complete a stamping action and can adapt to stamping documents with different thicknesses, the application range of equipment is greatly expanded, and meanwhile the stamping position can be adjusted according to requirements; and furthermore, multiple seals can be mounted at the same time, and the stamping efficiency is improved greatly.