Display module, splicing method of display module and display device

The invention provides a display module, a splicing method of the display module and a display device, the display module comprises a box body, the edge in the box body is provided with a magnetic attraction structure, and the magnetic attraction structure is provided with a concave part; the surface of the side, facing the box body, of each display panel is provided with a first magnetic part, the concave parts are used for containing at least part of the first magnetic parts so as to position the display panels, and magnetic force which attracts each other can be generated between the first magnetic parts and the magnetic attraction structures. Therefore, the display panel and the box body are fixed. On one hand, due to the fact that the concave part is arranged on the magnetic attraction structure and used for containing at least part of the first magnetic piece, the display panel can be positioned through cooperation between the concave part and the first magnetic piece; on the other hand, due to the fact