Abstract: Establishment of an applicable indicator system for assessment of comprehensive benefit of water pollution control projects is a sign of scientific,standardized and quantitative testing of levels and effectiveness of water pollution control projects.Principles and methods for the establishment of such a system are systematically put forth.Based on purposes of the water pollution control projects,an indicator system for assessment of comprehensive benefit of water pollution control projects has been established.This indicator system is concise,practical,user-friendly and able to objectively,accurately,and comprehensively reflect quality of water pollution control projects.On such a basis,standards and their weights of various grades of the assessment indicator system for the Gehu Lake region have been worked out according to the rural characteristics,water environment,economic and technological conditions of this area.