Chlorine dioxide is a disinfector with high guality cmd safety.At present,the disinfector using in drinking water is produced by facilities adopting of sodium chlorite or sodium chlorate technoloyy.The chlorine dioxide disinfection is produced and added continually by the chlorine dioxide producer.The chlorine dioxide quantity added must measure up to the requirement of code criterionand can be adjusted manuallyor automatically.The practice shows that this disinfection technology is especially appropriateto water supply in dispersive villages.