A notebook computer includes a main body, two connecting assemblies, and a display. The main body comprises an upper surface and two first joint members disposed on two corners of the upper surface. Each of the connecting assemblies includes an arm, a connecting shaft, and a stop cover. One end of the arm is rotatably connected to a first joint member. The connecting shaft is perpendicularly is connected to the arm, and adjacent to a distal end of the arm from the first joint member. The stop cover is rotatably disposed on the distal end. The display defines a pair of axle holes at one sidewall. The display is disposed between the two arms of the two connecting assemblies, and each connecting shaft of each arm is rotatably inserted in the axle hole.