Abstract: Grundwater resources system and economy system of Dalian is analyzed firstly.This paper considers economy system,water reurces system and water environment system as united macro-system.The systematic fuzzy decision-making theory,the hierarchical optimization theory and the theory of fuzzy neural network are applied in the developed concordant mode within water resources,water environment and economy.A study on sustainable development in concordance within the three for Dalian is preceded,and a optimized scheme is obtained.