Ventilation and heat preservation type greenhouse

The utility model discloses a ventilation and heat preservation type greenhouse, and relates to the technical field of planting greenhouses. The greenhouse comprises a greenhouse body composed of a greenhouse frame and tarpaulin. At least two rows of planting racks are arranged in the greenhouse; stand columns of the planting frame extend upwards to support the top of the shed frame. Two rows of film pipelines are fixedly connected to the top in the greenhouse; the upper portion of the film pipeline is fixedly connected with the shed frame. The side face of the film pipeline is fixedly connected with the planting frame. A plurality of air holes are formed in the film pipelines; the greenhouse is provided with a self-drooping shutter used for releasing pressure. The greenhouse has the advantages that through internal circulation of the greenhouse, the temperature and humidity in the greenhouse are more uniform, the circulation temperature in the greenhouse can be conveniently adjusted and controlled, and the s