The invention discloses a cutting edge machining device of a dual-face tooth blade. The device comprises a shell assembly and a cleaning assembly; the shell assembly comprises a spindle box, a cuttinghead, a worktable, a supporting base, a base, a fixed base and a drag chain; the supporting base is located on the bottom face of the worktable, and is fixedly connected with the worktable, the baseis located on the bottom face of the supporting base, and is fixedly connected with the supporting base, the fixed base is located on the rear surface of the worktable, a suction nozzle is arranged onthe upper surface of the worktable, the suction nozzle is connected with a dust suction pipe, through rotation of a draught fan in a cleaning box, the suction nozzle generates certain suction force,stacked waste scraps on the worktable can be cleaned, the work process of workers is simplified, work efficiency is improved, a clamping groove is formed in the upper surface of the worktable, a buckle is arranged on the inner side of the clamping groove, the suction nozzle is placed in the clamping groove, and is fixed through the buckle, and the suction nozzle can be more stably mounted.