Reinforced PVC waterproofing membrane is a kind of high quality and high polymer waterproofing sheet with excellent performance. The reinforced PVC waterproofing membrane is produced by extrusion method by adding plasticizer, anti-ultraviolet agent, anti-aging agent, stabilizer and other processing aids into PVC resin. Thermoplasticity endows the coil with the properties of hot air welding and mechanical alarm fixing, thus solving the problem of leakage caused by poor glue performance which has been plagued the construction industry. Recently, although the market share of PVC waterproofing membrane is about 8%-9%, the market share is small, but the application is stable and basically unchanged. In recent years, the market share of TPO waterproofing membrane has increased rapidly, but the share of TPO waterproofing membrane mainly comes from EPDM. The application of EPDM has been reduced accordingly, while PVC waterproofing membrane with the same thermoplastic material has not been affected, which shows that TPO waterproofing membrane has a stable position in single-layer roofing. The waterproofing integrity of PVC waterproofing system is better than that of TPO system during the whole life of roof. Not all roofs can drain smoothly. Water accumulation may occur on "horizontal" roofs. It is more appropriate to use PVC waterproof membrane.