A notebook computer with detachable display unit is disclosed. The notebook computer includes a main body, a hinge, and a display unit. The hinge includes an electrical connector, an elastic element, a post, and a pivot shaft. The electrical connector is connected with the elastic element. The post is combined with the pivot shaft. The pivot shaft is assembled on the main body. The display unit defines an opening therein. The display unit includes an electrical connector, an opening, and a locking mechanism. The opening is configured for receiving the post. The electrical connectors of the hinge and the display unit are configured for engaging with each other. The locking mechanism is configured for locking or detaching the connection between the display unit and the main body. The elastic element can reduce the shock that the electrical connectors suffered when the display unit is connected or disconnected to the main unit.