From three angles of human behavior, substance and environment, the main reasons to lead to security accidents of coal mining enterprise were alalyzed, and the index system of security-crisis assessment and early warning for coal mining enterprise was constructed. Because of uncertainty, randomicity and fuzzification for the evaluating index, the model of fuzzy comprehensive assessment of coal mining enterprise security-crisis was established using Fuzzy AHP. In this model, the weight of each parameter index was determined by employing AHP, and the fuzzy set of the factors of security-crisis was assessed by expertise method, the method of determing security-crisis rank under multi-hierarchy was discussed using model of fuzzy comprehensive assessment. The model constructed was used for security-crisis assessment and early warning for coal mining enterprise. Taking a coal mining enterprise of Hunan Province for example, the empirical study was made by using this model. The result shows that the general status of this coal mining enterprise security is the better. This theory and method provide an effective way for security protection and early warning of coal mining enterprises.