This paper, based on an analysis of Suicidal Sociology, pushes forward its discussion on the development of Suicidal Sociology following the three points. (1) Before Durkheim, Moral Statisticians had already analyzed the influence of social factors on the rate of suicide; (2) After Durkheim, other scholars had made deep discussion and criticism on his theory; and (3) Neo\|phenomenology developed a new approach to the study of suicide.