The invention discloses an iron plate grinding device convenient for removing scrap scraps. The device comprises a bottom plate, a supporting rod, a flat plate, an electro-hydraulic push rod, a motor,a protective cover, a cylinder, a first spring, a disc, a mounting plate, a mounting bolt, a grinding disc, a telescopic rod, a second spring, a sleeve, an iron rod, a through hole, a clamping groove, a limiting strip, a square hole, a connecting rod, an electromagnet, an industrial dust collector, a straight pipe, a straight pipe, a suction hole, a sealing cap, a fixing block, a permanent magnet, an iron plate, a threaded barrel, a locking bolt, an oil tank, an oil well pump, an oil pumping pipe, an oil outlet hose, an oil filling port, an electric push rod, a first through groove, a secondthrough groove, a gooseneck pipe, a connecting plate, an oil distributing pipe and a nozzle. The device is reasonable in structure and novel in design, through the arrangement of the protective cover,the cylinder and the first spring, the grinding disc and the iron plate can be covered when the grinding machine is used for grinding, the generated scraps can be effectively removed through the chipsuction structure, so that the scraps generated by grinding can be prevented from splashing to the outside, and the cleaning labor intensity is low.