Internal shading insulation system can adjust the light to improve the ecological environment in the greenhouse in summer, when the room temperature rises to a certain value, according to the different shading rate can be a reflection of the sun, and the sunlight diffusing into the interior to achieve the purpose of cooling off shade; thermal screen, can make the greenhouse temperature 4-6 ℃, in order to reduce indoor the required temperature. In contrast, winter night, internal shading thermal screen can effectively prevent the infrared escape, when the greenhouse or indoor temperature drops to the low temperature limit value that is set, closed shading curtain, heat preservation strengthening greenhouse, reduce the ground radiation heat loss, reduce the heating energy consumption, greatly reducing the greenhouse operation cost during the day can be opened; shading curtain, make full daylight greenhouse.