Abstract: A comprehensive evaluation of the water-saving society is significant for promoting thorough water saving. Aiming at the objective fact that evaluation indexes are interactional, an analytic network process is used for assessment of the water-saving society. Taking the Changshu city as an example, the evaluation index system of the water saving society is built and the interaction between the indexes is revealed. On the basis of the above analysis, the ANP model, which calculates weights of each index by solving super matrix, is established by the software—Super Decisions. The results of ANP comprehensive evaluation from 2008 to 2012 which can reflect the level of the water-saving society are calculated and compared with the AHP model. Analysis results show that the development of the water-saving society is rapid in the Changshu city. In 2008, the score of comprehensive evaluation was lower than the qualified grade, indicating that water saving was at a low level in the Changshu city. But in 2012, the score was close to 90. In other words, the Changshu city keeps its development at a high speed and establishes a water-saving and pollution-prevention society adapted to modernization. The results of ANP model are in accordance with the AHP model. And the results are more suitable with the actual situation in the Changshu city, which demonstrates that ANP model is scientific and reasonable, and has a favorable application prospect in comprehensive evaluation of the water-saving society.