The service life and printing quality of the printing press, in addition to being affected by the manufacturing quality, are more importantly determined by the machine maintenance during the use of the printing press. Regular maintenance of flexo printing machines is an effective means to detect signs of accidents and eliminate hidden dangers in time, grasp the natural wear status of parts and replace wearing parts in time, reduce the accident rate, downtime rate and maintain the working accuracy of the machine. Equipment operators and workshop electromechanical maintenance personnel must do a good job in accordance with the regulations.