In this masterpaper I would like to sort out various explanations of suicide phenomena and the solution through various disciplines of psychology, religion, philosophy, law and sociology. Suicide is not a problem of courage or mental weakness, but it is a complex phenomenon that can be explained from various aspects. Therefore, its treatment method is also complicated. Therefore, I compares the research results of this subject from various disciplines, and indicates the complexity of this issue. However, the suicide phenomenon is not an object for various understanding studies. It ultimately belongs to people's concern for their own lives. Therefore, in addition to trying to provide a possible way to understand this suicide phenomenon, it is more desirable for the relevant government departments to improve their understanding of the importance of this issue.