At present,the water resources become less and less.In order to save water and achieve the goal of energy conservation and emission reduction,more and more coal mines in the construction consider putting the treated mine water into drinking water,therefore the reverse osmosis technology becomes the preferred technology in currently used technologies for mine water treatment.This paper briefly introduces the basic concept of the reverse osmosis technology,analyzes the feasibility of applying the reverse osmosis technology into the treatment of mine water,probes into the expected effect and development prospect of the reverse osmosis treatment,and puts forward some matters needing attention in applying the reverse osmosis technology.