Abstract: Photosynthesis is the physiological basis of the crop growth and yield formation, also is the decisive factor of the level of crop productivity.Extensive researches have been accomplished at home and abroad.This access to information from environmental factors on photosynthesis of rice, such as the photosynthetic characteristics of rice, light, CO2 concentration, temperature, moisture, cultivation methods, soil factors and so on, were comprehensive analyzed and described the photosynthetic characteristics in rice research.