A buffer structure, a fall protection device, a control method of the fall protection device, and a mobile terminal are provided. The buffer structure includes a connecting rod, a counterweight which is in a rotatable connection with the connecting rod, and a buffer component connected with the counterweight. In a case that an object to be protected is in a state of falling, the counterweight automatically turns according to a falling direction of the object to be protected, and the buffer component is turned to a gravity direction under driving of the counterweight.