The sunlight tracking method and device is used in photovoltaic generation, photothermal generation, solar heat utilization and other solar energy utilization fields. The present invention is based on that after one straight line parallel to the earth axis is led out from some point on the ground, the angle of the connecting line between any point on the straight line and the sun to the straight line is the same as the angle between the sun beam and the earth axis and may be used in tracking sunlight. The present invention is simple and has low cost. |