The invention discloses a method for controlling traffic light displayed by an action picture of a human body, wherein an LED(light-emitting display) lamp display screen of a traffic light device displays the action picture of the human body. The method for controlling traffic light comprises the following steps: the corresponding three-dimensional coordinates is generated by capturing the human action of the imaging area through an imaging unit; the 3D(three-dimensional) coordinates is acquired by and an attitude conversion processing unit and the 3D coordinates of human action are filtered and converted to two-dimensional coordinates; two-dimensional coordinates is obtained by the LED light display screen and the corresponding two-dimensional coordinates of the LED light red light is controlled by the LED light display screen; the traffic light device is also provided with a music player and the music player plays when the LED light is red. The gesture conversion processing unit acquires 3D coordinates, and then coordinates the 3D coordinates of human actions and then converts them into two-dimensional coordinates. The traffic light displayed by the action picture of the human body displays different pictures according to the change of human actions so as to improve the attention of pedestrians, and increases the warning effect of traffic lights, thereby reducing the probability of car accidents.