Solar film greenhouse is built according to the principle of greenhouse effect.

The characteristic of this kind of greenhouse is three sides of greenhouse use brick or soil wall or other material that can keep the thermal. The sunny slope use film or PC sheet cover. The thermal from daytime can be kept inside greenhouse and released at night. This kind of greenhouse save energy and is more economic, but the planting space is limited. After the temperature rises in the greenhouse, the long-wave radiation emitted can block the heat or little heat is lost to the outside world through the glass or plastic film. The heat loss of the greenhouse is mainly through the heat loss of convection and conduction.

This heat loss can be reduced if people take measures such as sealing and insulation. This excess heat can be stored if a heat storage device is installed in the room. Solar greenhouse at night, when there is no solar radiation, the greenhouse will still emit heat to the outside world, then the greenhouse is in a cooling state, in order to reduce heat dissipation, so at night to cover the external insulation layer in the greenhouse. If there is a heat storage device in the greenhouse, the heat stored during the day can be released at night to ensure the minimum humidity of the greenhouse at night. Greenhouse owners have long contended with the loss of heat from greenhouses during the night and at times of cool weather. That is why high level of thermicity of Solar film is so important. Research conducted in Europe shows that, in greenhouses covered with Solar film , the total solar heat load was reduced by over 20%, without any significant decrease in PAR light.

Solar film greenhouse creates higher yields and stronger-than-normal root systems, making it a excellent choice for ornamental plants, nursery stock and tomatoes.