Taking the automatic welding production of the butt joint of pipe cylinder for shipping as an example,the design ideas of the butt joint fully automatic welding equipment for pipe cylinder is introduced in detail,including the technical requirements,composition,characteristics,and electrical control system,etc. The working principle of the operating machine,special roller frame and electrical control system are emphatically analyzed. The service condition of the butt joint fully automatic welding equipment for pipe cylinder is also introduced briefly. Practice has proved that the butt joint fully automatic welding equipment for pipe cylinder designed is easy to operate,and has good welding quality and high degree of automation,also can completely meet the requirements of automatic welding of the butt joint fully automatic welding equipment for pipe cylinder. The design concept of this butt joint fully automatic welding equipment for pipe cylinder has certain reference for the design and application of butt joint automatic welding production line for cylinder.