Inflatable membrane structure uses an air supply and pressurization system to supply air and pressure indoors, creating a pressure difference of 200-300 Pa between the inside and outside of the inflatable membrane structure (equivalent to the pressure difference of about 45 meters in nature). The entire building is supported by the pressure difference between the inside and outside, and the membrane surface is stretched to ensure structural rigidity and maintain its shape to resist external loads. Due to the use of air pressure as support, a large-span space can be formed without beams or columns inside. Inflatable membrane structure products cover scenarios such as cultural and sports venues, industrial warehouses, mining raw materials, and gas rib hangars.