In view of the weld, corrosion and other factors, pipeline defects can not be avoided. At present, there is a situation of high labor intensity and low efficiency in pipeline repair work at home and abroad. Therefore, there is an urgent need for an automatic and efficient inspection and repair scheme based on robot technology. This project innovatively developed a tandem pipeline inspection and repair robot, which aims to solve the problems of inconvenient pipeline repair and low efficiency. The main components of the robot include: flaw detection part, which is used to automatically identify pipeline damage; Repair part, using ultraviolet lamp to cure resin to repair damaged parts; Control part, using laser radar for precise control; Energy supply part, equipped with DC power supply and wireless charging function, to ensure that the robot can run reliably for a long time. The technical solution of the project is innovative and feasible, and the team members have relevant research and development experience to ensure the smooth implementation of the project.