The sewage effective treatment in villages and towns is the important link of economy sustainable development in villages and towns region. Due to the economic condition and technical level of masses rural areas are relatively backward and lack of the sewage treatment technology which aims at sewage of towns,it often leads to a large number of sewage without treatment discharges at random and have caused serious damage to the water environment and health of people. Based on the characteristics of sewage in towns and treatment status,applying principle of the processing technology and several suitable sewage treatment technology for towns were discussed to provide some reference of how to select and develop the sewage treatment technology applicable for towns.