Water pollution and eutrophication of lakes is getting daily serious,affecting not only water resources utilization of lakes for human but also the healthy development of the whole eco-environment system.Nevertheless,the application of pollution control measures is restrained because of the economic costs in many conditions,especially in developing countries.In this paper,the APCM model is developed to evaluate the techno-economic characteristics of water control measures and optimize their combinations under the limits of watershed environmental carrying capacity.Based on the model,Tangxun Lake basin in Wuhan city is taken as a case study,and ten major water pollution control measures are identified and analyzed.Associating with the cost and pollution reduction ability (i.e.COD,TN,TP) of each measure in the basin,the total investment costs and the optimal measure combinations are given.Results show that constructing lakeshore buffer strips,controlling livestock and poultry raising,water conservation and agricultural non-point source control have higher policy priorities in tackling the water pollution problems in the basin.The total required minimal investment is 302.47 billion for the pollution control in the year 2010,and even if all the ten key measures are implemented,the demanded reduction targets can not be achieved with a 1098.9 t/a ofTN which should be further reduced in 2020 to satisfy the basin water quality requirements.This model platform can help the government for water protection decision makings.