Abstract: Due to the influence of various factors，the situation of algae in source water in Wuhan has been very serious. One of the main hazards of algae is to increase the amount of disinfection by-products in drinking water. This paper analyzed the distribution of algae in source water in Wuhan and discussed some measures to reduce algae-related disinfection by-products by summarizing the development of algae removal and disinfection technology. Currently，physical algae removal combined with chloramine or chlorine dioxide disinfection should be facilitated to inhibit the formation of algae-related disinfection by-products.

Key words: drinking water, disinfection by-products, algae, chloramine disinfection