Abstract: As an essential method of researching environmental geology, the comprehensive evaluation of geologic environment plays an important role in mine environmental protection. This paper did the comprehensive evaluation of geologic environment in the coal-phosphorus mining area which is located in central Longmen Mountains, by the method of mathematics semiquantity. It divided this mining area into poor, normal, and relatively good area of geologic environment, and discussed the main problems of geologic environment and proposed the corresponding countermeasures and suggestions. All of these provide important foundations for mine environmental protection and harness.