The invention provides an assemble and disassemble device of a storage battery set. The assemble and disassemble device of the storage battery set comprises a base, a bearing platform, a supporting arm and a power device, wherein the bearing platform is used for bearing the storage battery set and is parallel with the base, the supporting arm is arranged between the base and the bearing platform, one end of the supporting arm is hinged to the base, the other end of the supporting arm is hinged to the bearing platform, the power device is arranged on the base, connected with the supporting arm and used for driving the supporting arm to move vertically, and the supporting arm moves vertically to drive the bearing platform to move vertically. The assemble and disassemble device of the storage battery is small in occupying area, convenient to move, convenient and fast to operate, low in maintenance cost and little in maintenance work. A crane is omitted in the process of assembling or disassembling the storage battery set of a motor train unit, and therefore the potential risk existing when the storage battery set is assembled or disassembled is eliminated.