Water supply in small towns is one of the important components of the small towns' economy and society development.Based on the actual condition of water supply system,this paper analyzes the problems existed in water supply system of small towns,such as gradually polluted sources,imperfect water supply facilities,smaller scales,unreasonable quantity and so on.In addition,the corresponding measures are put forward to guarantee water supply system develop speed in small towns.Those countermeasures are launching sources protection work to guarantee the drinking water safety according to the character of the small town,then adopts reasonable water supply style,chooses economy water processing method,optimizes water network system construction;selects reasonable quantity consumption quota,and carries out gradually the regional water supply mode in conditional small towns.