A remote control method controls a television (TV) set to perform functions using an electronic device. The method controls a camera connected with the electronic device to capture an image in front of the TV set when the TV set is turned on. The method analyzes the captured image to determine whether a hand image of a user exists in the captured image, and extracts the hand image from the captured image upon the condition that the hand image exists in the captured image to determine a hand sign of the user according to the extracted hand image. The method generates a remote control signal for controlling the TV set according to the determined hand sign, and controls the TV set to perform a function according to the remote control signal.