This device is suitable for food, beverage, chemical, hospital, electronics and other sectors of water treatment equipment, but also as a community, industrial zones, oil and other water house the core equipment. Reverse osmosis is the world's most advanced and most energy efficient membrane separation technology. It is mainly the use of a semi-permeable membrane permeation principle, by applying a certain way to give it a kind of pressure, anti-natural penetration direction of the force, so that the concentrated solution to dilute solution of water infiltration, this approach is called reverse osmosis. Device consists of a reverse osmosis element consisting of reverse osmosis unit. Due to the reverse osmosis membrane pore size is very small and therefore can effectively remove dissolved salts in water, colloids, microorganisms, organic compounds such as (removal of up to 97-98%). The system has good water quality, low energy consumption, pollution-free complex, simple process, simple operation