Abstract: Applying the straw reactor in greenhouse can improve the growth environment of crops and the soil temperature, fertilize soil, reduce obstacles of continuous cropping, enhance disease resistance of plants. It can thoroughly avoid quality and safety problem of agricultural products resulting from application of quantities of chemical fertilizer and pesticide. It is an effective measure that can promote the integrated utilization of straw and manure livestock and poutry, increase yield and improve quality. The experiment results showed that the concentration of CO2 increased obviously when about 4000kg straw applied in each greenhouse, even in the coldest December and January the soil temperature rised 0.5-1.0℃, soil temperature difference smaller, and reduce more than half of the use of organic fertilizers, chemical fertilizers and pesticide.