Solar energy is not only energy and renewable energy. The resource is abundance can not only be free use but also need not transport to the environment has no pollution. Solar energy is also established with two main defects: low energy current density; It takes variety of the season's weather intensity of factors and so at the point of soil does not affect can keep constant. The great defect that greatly limits the efficient use of solar energy. Even if the human use of solar and has very long history. In our country the two lifting many years ahead of time is known by the use of four sides of steel focus from the sunlight to the ignition; Using solar energy for drying the farm and by-products. For the development of modern solar energy by the daily use of the comprehensive solar photothermal energy using photoelectric solar energy and the use of solar light chemical and so on. And the flat heat sink as the invention claims a high efficiency solar light using the element to several years of development is fast.