The deep recovery project of siloxane of Sanyou Silicon was put into operation successfully. The project can make the recovery rate of siloxane up to 99% and the low molecular recovery efficiency up to RMB 910,000. The project carries out siloxane recovery by installing recovery devices. After the project is put into use, the added value of the product is further improved, the by-products are reused, and the win-win effect of environmental protection and economic benefits is achieved.