Abstract: The index system of evaluating ecological level of city was established based on comprehensive analysis of ecological city.The ecological level of Zhengzhou city from 2005 to 2009 was evaluated by using fuzzy comprehensive method.The forecast model was established and the trend of ecological level from 2010 to 2015 was predicted by using regression analysis.The results showed that the overall ecological level of Zhengzhou city was not high during the eleventh five-year plan,meanwhile Zhengzhou c...