The membrane material used in membrane structure buildings is a kind of membrane material with good strength and flexibility. It is woven from fiber into fabric base material, and processed and fixed with resin as coating material on both sides of the base material. The central fabric base material is divided into polyester fiber and glass fiber, and the resins used as coating materials are polyvinyl chloride resin (PVC) and polytetrafluoroethylene resin (PTFE) In terms of mechanics, fabric substrate and coating material have the following functional properties respectively.