Taiwan's standards for identifying pornographic works are stagnant, and there is always disagreement on the definition. Therefore, referring to the history and changes of the U.S. Supreme Court's standards for identifying pornographic works, and corroborating with Taiwan's standards for identifying pornographic works, we found that the current domestic standards for identifying pornographic works are inconsistent. The definition of obscene publications is still unclear, and the distinction between pornographic content as "hardcore" and "softcore" lacks legitimacy. Therefore, it is suggested that in the future, we should consider getting rid of definitional issues and uniformly treat obscenity as a neutral concept or change it to a neutral concept. Then, in the spirit of empirical research, we can follow the example of Germany and directly prohibit the distribution or publicity of pornographic works containing specific scenes. Only by enumerating restrictions on specific pornographic works based on the substantive impact of different categories on sexual autonomy and the sound development of young people's physical and mental health can we stop dwelling on definitional issues.