The invention relates to a grinding machine, in particular to a burr grinding machine after part drilling. In order to solve the technical problems, the invention provide a burr grinding machine afterpart grinding, and the burr grinding machine can replace people to grind and clear burrs, avoids hand ache, is high in working efficiency, further can clear metal debris and does not affect grinding.According to the technical scheme adopted by the invention, the burr grinding machine after part drilling comprises a shell, a transverse plate, a swing plate, a button, a guide slide block, a sleeve, a frame body, a vertical slide block, a first spring and the like, wherein the lower part of the left side surface outside the shell is fixedly connected with the transverse plate; the left end of the transverse plate is hinged with the swing plate; and a guide slide slot is formed in the upper part of the left side surface of the swing plate. According to the burr grinding machine disclosed bythe invention, the swing plate is pulled for enabling a grinding block to move downwards, and the button is pressed for starting a double-axis motor to drive the grinding block to rotate. The device is moved, so that the grinding block is in contact with burrs for grinding and clearing the burrs, and a user does not need to use a file to clear the burrs, and therefore, the burr grinding machine ismore convenient, and the working effect is prevented from being affected by hand ache.