SW is a kind of reverse osmosis desalination membrane featured with high salt rejection rate, high water production and low energy cost. The series of SW membrane can be used for sea-water desalination and have the characteristics of high salt rejection rate, stable performance and low operation cost. SW membrane enables obtaining drinking water from one-stage reverse osmosis desalination of sea-water. SW membrane can also be used in desalination of high concentration brackish water or various industrial water treatment, such as boiler make-up water for power plants. Besides, SW membrane can be used in the fields of landfill leachate treatment and concentrated recovery of high value added substances.