The invention discloses a magnetic absorption type damping plate and a magnetization device thereof, and belongs to the technical field of automobile damping. The magnetization device of the magnetic absorption type damping plate comprises a magnetization rack, a conveying belt, a magnetization roller and a press plate, wherein two ends of the magnetization roller and the magnetization roller are detachably and fixedly connected with and suspended on a part above the conveying belt, two side ends of the press plate and the magnetization roller are also detachably and fixedly connected, a front end of the press plate is attached onto the magnetization roller, and a gap through which the magnetic absorption type damping plate can pass is reserved. The ingredient of the magnetic absorption type damping plate comprises constituents based on parts by weight: 300-400 parts of magnetic powder, 200-300 parts of calcium powder, 70-80 parts of pitch, 65-75 parts of mica powder, 30-50 parts of pitch modifier, 8-12 parts of softening agent and 3-5 parts of fiber. Cooling water on a panel surface of the magnetic absorption type damping plate can be extruded and dehydrated by the press plate, and a foundation is built for water absorption and drying of the panel surface in the following step.