Abstract: Since the outbreak of novel coronavirus, the safe drinking water has become a topic of concern to prevent viruses from entering the mouth. How to ensure the safety of drinking water and which water treatment technology is suitable for China's water quality? Through the reverse osmosis technology in the membrane filter element has the direct flow type and the side flow type two kinds of structure forms, as well as the reverse osmosis membrane filter element in the water purifier application research, the reverse osmosis water purifier technical can solve the water purification question. After testing, the purified water by the reverse osmosis water purifier can meet the requirements of drinking water health and safety standards. The reverse osmosis purifier can deeply purify water and is one of the best choices for people to realize the safety of drinking water.

Key words: Reverse osmosis technology, The reverse osmosis filter, The reverse osmosis water purifier, The safe drinking water