A door handle includes a human body detection sensor, a controller, a servo assembly, and an engaging assembly. The controller is electrically connected with the human body detection sensor and the servo assembly, and the engaging assembly is controlled by the servo assembly. The engaging assembly includes a first engaging state and a second engaging state. When the engaging assembly is in the first engaging state, the door handle is able to drive a lock body connecting shaft to rotate; and when the engaging assembly is in the second engaging state, the door handle is unable to drive the lock body connecting shaft to rotate.