Abstract: Modern forestry production is an enterprise of managing photosynthesis,and is affected by the rate of using light energy in the tree size because of the high and low productivity of forest management. This paper reviewed the research on the relationship between light and the radiation and forestry production,and analyzed the effects of spectral components,illumination time and light intensity on forestry production. With the development of forestry science and technology,such factors as the rate of tree species selection of high light energy utilization,the simulation of natural reasonable forest stand structure,and the formulation of management measures and scientific management scheme would become effective ways to improve forest light rate in the future.