在日本刑法理论中对于原因自由行为存在“定型说”、“有力说”和“相当因果关系说”三种观点。这三种观点反映了日本刑法学在实行行为及责任原则研究中的发展和变化 ,体现了刑法观念从行为无价值论向结果无价值论、刑法学研究方法从体系思考向问题思考的转变。 In the theory of criminal law in Japan, there are three kinds of opinions about the free behavior of reasons: “stereotyped”, “powerful” and “fairly causal relationship.” These three views reflect the development and changes of Japanese criminal law in the study of the principles of conduct and responsibility, and reflect the change of the concept of criminal law from the actionlessness of value to the resultlessness of value, and the change of the research method of criminallaw from system to problem.