An electronic device includes a main body, a display module, a first magnet, a second magnet and a third magnet. The display module rotatably positioned on the main body includes a first surface and a second surface. The first magnet and the second magnet are positioned on one of the main body and the display module, and the third magnet is positioned on the other of the main body and the display module. The third magnet is an electromagnet. The third magnet can selectably face one of the first magnet and the second magnet by changing the polarity of the third magnet, thereby, the display module can rotate relative to the main body and can be fixed at a different position.