Accident-causing theories clarifies the cause and effect relation of the industrial accident from the industrial accident from the essence.It illustrates the occurrence、the development process and the result of the industrial accident.Researching and investigating the accident-causing theories,can rise the various factors of the whole process to the reasonableness know,finding out regulation and characteristics of the trouble creation,also finding out the method and measures that can prevent from the occurrence of the industrial accident. In this paper,I introduced major accident-causing theories,which include Monofactorial Accident Causation Theory、Accident Causation Sequence Theory、Epidemiological Theory and System Theory,and evaluated their opinions.In the end of the paper,I forecast their future developments.