The working principle of the suntracking photovoltaic support is based on the light-controlled solar tracking technology, the use of solar light guidance, through the crystal silicon and gallium arsenide photosensitive devices to collect signals, and then through the digital circuit to control the main circuit, with a stepper motor or servo motor to drive the tracking device, in order to achieve accurate tracking of the sun trajectory. The suntracking photovoltaic bracket can automatically track the position of the sun, regardless of weather factors, and maximize the utilization of solar energy collection.