The invention belongs to the field of aluminum electrolysis, and particularly relates to an electrode bar cleaning device for aluminum electrolysis. For the problems that in a traditional method, a manual cleaning mode is adopted, the cleaning efficiency is low, and an electrode bar is prone to being damaged, the following scheme is proposed, the electrode bar cleaning device for aluminum electrolysis comprises a bottom plate, a bracket which is of a U-shaped structure is arranged on the top of the bottom plate, a driving mechanism is installed on the side, close to the bottom plate, of the bracket, a pushing plate is installed at the bottom of the driving mechanism, a movable plate is installed on the side, close to the bottom plate, of the pushing plate, a sliding groove is formed in thebottom of the movable plate, an abutting plate is movably connected to the interior of the sliding groove in a sleeved mode, and a cleaning plate is welded to one side of the end, stretching out of the sliding groove, of the abutting plate. According to the electrode bar cleaning device for aluminum electrolysis, foreign matter attached to the exterior and the end of the electrode bar can be removed at a time, the cleaning force can be automatically adjusted in the cleaning process, damage to the electrode bar is avoided, the completeness of the electrode bar is guaranteed, manpower and material resources are saved, and the cleaning efficiency of the electrode bar is improved.