Abstract: In order to construct system of safety psychology methodology and perfect theoretical system of safety psychology, definition of safety psychology methodology was proposed based on definition of safety psychology. Different research approaches were divided according to research purpose and study objects. On the basis of ideological principles of dialectical materialism and historical materialism, four research principles, such as objective and systematic, group-study and individual-study, qualitative-study and quantitative-study, theoretical-study and applied-study, and six research methods, such as case method, psychological measurement method, psychological statistics method, experimental method, comparative method and related disciplines method, were put forward and analyzed. Meanwhile, paradigm of safety psychology methodology was constructed. The results show that research paradigm of safety psychology methodology is based on phenomenon of safety psychology, to find out problems of safety psychology, to put forward hypothesis of safety psychology, to excavate leading factors of safety psychology and to determine law of safety psychology. Principles, approaches, methods and procedures of safety psychology constitute theoretical system of safety psychology methodology.

Key words: safety psychology, methodology, research approach, research principles, research paradigm