Taking Fuxin City of Northwest Laioning Provincd as a study object of typical coal-based city,the paper made an evaluation on the ecological environmental situation through establishing an indicator system of ecological environmental evaluation and calculated the capacity value of the ecological environment by adopting the methods of analytic hierarchy process(AHP)and ecological environmental capacity index.The result indicated that evaluation value of the present ecological environment capacity in Fuxin is 0.316 7, which fell into the fourth grade of the ecological environment capacity grading standard and showed that the current ecological environment capacity of Fuxin City is at relatively low level,its carrying capacity of natural ecosystem is close to its limit and is inseparable from the long time coal mining activities of Fuxin City,therefore attention should be paid to the coordination of economic development and natural ecological environment to improve the environment of the city and prompt the sustainable development.