Before using DGR linear actuators solar panels tracking system angle auto-adjustment equipment, input the corresponding located latitude direct solar angle and the date into PLC System, meanwhile input the corresponding direct solar angle and the best angle of solar panels as well. While using, PLC system’s internal clock confirms current date and confirms the corresponding direct sun angle according to the current date to go further consolidate the solar panels best angle. After that, PLC system drives electric cylinder linear actuators in and out. Then, the earrings drive the slider move in the chute so that solar panels angle can be automatically adjusted with direct sun angle, improving the photoelectric conversion efficiency of solar panels.