This system is installing inner sunshade net in the greenhouse. Inner sunshade system can improve the ecological environment in many ways. In summer sunshade screen can reflect part of the sunshine, and make diffuse sunshine into the greenhouse to irradiate the plants, which can protect the plants to avoid hard light, In winter night, the system can effectively prevent the escape of infrared, and reduce surface radiation heat loss and heating energy consumption, so it can reduce greenhouse operating costs.