Abstract: In order to evaluate coal mine safety state accurately, and improve the level of coal mine safety, the evaluation method of coal mine safety state based on the catastrophe theory was put forward. By analyzing the influencing factors of coal mine safety state, the evaluation index system of coal mine safety state was built from the personnel factors, material factors, environmental factors and management factors; combining with the evaluation index system, on the basis of catastrophe theory, the mutation model and evaluation process of coal mine safety state was put forward; through the optimization of evaluation method, the accuracy of evaluation result was improved. Based on the evaluation model and process, the safety state of a coal mine was evaluated and analyzed, and the evaluation results were consistent with the actual safety state of the coal mine, which proved the reasonable feasibility of the evaluation method. This method can be used to evaluate the safety state of coal mine and provide basis for formulating safety countermeasures.