The utility model provides a novel solar energy power generation device, the inside four -quadrant silicon photocell of photoelectric sensor is the photoelectric transducering element sensitive very much that sets a camera, has all obtained extensive application in every field such as photoelectricity collimation, photoelectric tracking and photoelectric guidance, adopts adiactinic shading drum to arrange in on it simultaneously to arrange convex lens the top of drum in, the sunlight can shine on the silicon photocell board under the effect of assembling of convex lens. Inaccurate or stop the circumstances of following the tracks of through adopting this kind of method to solve under the very weak circumstances of the Sun's rays general photoelectric sensor well to sun -tracking, simultaneously because adopt a shading section of thick bamboo, external parasitics light is also difficult to disturb this accuracy and reliability that has improved sun -tracking to a certain extent to its tracking.