The utility model provides an assembly and disassembly device, including actuating mechanism and more than one or two about the direction set up side by side, and by the actuating mechanism drive and can put the unit getting of removing of direction and fore -and -aft direction from top to bottom, get and put the unit and include the main tributary arm, on the main tributary arm in the front two of making progress that the interval extends about being equipped with in rear keep off arms, two are kept off arm and main tributary arm and enclose jointly and hold during the rebound under from and ask stand up to personally experience sth. Part of the body the tubular product that the support arm of goods shelves deposited or the U type holding tank of bar at the main tributary arm. The utility model discloses an assembly and disassembly device simple structure, convenient operation, realization multilayer type rack that can be convenient goes up the loading and unloading of tubular product or bar part, and safe and reliable has improved handling efficiency greatly, reduces workman's intensity of labour.