Abstract: In order to analyze the formation process of miners’ intentional unsafe behavior, swallowtail catastrophe model of intentional unsafe behavior of miners was built based on the theory of planned behavior (TPB) and catastrophe theory. With the swallowtail mutation model, this paper analyzes the forming process of the miners’ intentional unsafe behavior, explains the mutation process of the miners’ intentional safe behavior under the comprehensive influence of subjective norm, perceived behavior control and behavior attitude, and summarizes three situations of the occurrence of intentional unsafe behavior. This paper proposed some strategies to maintain the stability of miners’ intentional safety behavior from three aspects: safety training, enterprise culture and supervision system.