The invention provides a self-timer system and method. The system comprises an electronic device having a photographing or recording function, and a self-timer; the electronic device is arranged on the self-timer; the self-timer comprises a controller, an infrared receiver and a rotary platform; the controller sets a first area in a signal induction range of the infrared receiver; the controller controls the rotary platform to rotate, so that the infrared receiver can receive an infrared signal in the first area in the signal induction range; and thus, the lens of the electronic device can photograph or record a user in a specific angle.