The utility model belongs to a transportation tool, particularly relates to package and transportation of all products of an overall railway wagon, and specifically relates to a connecting device of a railway wagon body and a bogie. The connecting device comprises an elevator and a fastener. According to the key technology, the upper end of the elevator is connected with a seat plate; the seat plate is fixed with hanging plates; and the two hanging plates are connected with each other through a positioning plate. The connecting device has the beneficial effects that the upper end of the elevator is connected with the seat plate; the seat plate is fixed with the hanging plates; the two hanging plates are connected into a rigid structure through the positioning plate; a bogie axle can be suspended by the lower end of the elevator when the connecting device is used; and flanges on two sides of a middle beam are clamped by virtue of the hanging plates, so that the bogie can be fixed with the wagon body. Due to use of the hanging plates and the poisoning plate, the device can be repeatedly used; the transportation cost is saved; the device is capable of effectively preventing the bogie and the wagon body from oppositely moving in the processes of hoisting, transporting and the like; overall hoisting and transporting of the wagon body and the bogie can be achieved; a bogie wheel does not drop out in the process; and the potential safety hazard is avoided.