Abstract: The individual mental state of coal mine accidents will greatly affect the effectiveness of rescue operation. It is of great significance to understand the evolution process. According to the cusp catastrophe theory and mutation situation of individual psychological state in the accident, we build cusp catastrophic model, and research and analyze the balanced curved surface. Finally, we illustrate the evolution process of individual mental state in coal mine accidents and find the influence principle of uneasy mentality and surrounding environment on psychological state by the analysis of examples, and provide an effective way to reduce accidents by controling individual mental state.