The invention discloses a laptop computer adopting an air spring device. The laptop computer mainly comprises a laptop computer host and a laptop computer screen, and is characterized in that: the air spring device is arranged at the joint of the laptop computer host and the laptop computer screen, the least number of the air spring device is one, the air spring device regulates height and angle by electric control or manual control and can be stopped and locked at any position in a lifting process, so that the free lifting and locking of the height of the laptop computer screen can be realized. When the device is used, the cervical vertebra, lumbar ache and other problems of a user who watches the low screen of the conventional laptop computer with head down are solved. The cable between the laptop computer host and the laptop computer screen has a telescopic line structure or a spiral line structure; therefore, the cable may not twine and knot in the lifting process of the screen, space is saved and the simplicity and convenience of the operation of the whole process of lifting are realized.