In the light of the faults occurring in the operation of the reverse osmosis water treatment system,this paper points out that some effective modification measures must be adopted properly in the design of the front equipment of the reverse osmosis water treatment system,the adjustment of the operation,the supplement and perfection of the operation methods and procedures of the reverse osmosis water treatment system,and the analysis of the operation historical data,etc.for the purpose of guaranteeing the safe and economic operation of the reverse osmosis water treatment system.