1.Simple structure: Because of the characteristics of the load-bearing structure of the plastic greenhouse, a solid membrane system, covering materials and other relatively simple installation requirements. Use ordinary hot-dip galvanized steel plates or light steel load-bearing structures, galvanized mild steel is generally used, and the structure is more suitable. The greenhouse body is mainly composed of steel skeleton columns, four beams, dome poles, top poles, beams, bracket characters and other gutters, which are used as top longitudinal pole members of tie rods and around them, thereby greatly simplifying the structure and reducing the amount of steel. At the same time, when the covering material is non-mechanically connected to the roof, the roof only bears gravity load and positive wind pressure, and the wind pressure is transmitted to the gutters and pillars, which greatly optimizes the stress on the greenhouse structure.