摘要:This research is intended to explain the reasons for Japan's rejection of the anti-whaling norms. To investigate this, a qualitative approach was used with document-based data methods, both primary and secondary. Japan is one of the industrialized countries that have stopped hunting for commercial breaks because of the moratorium in 1982. This moratorium is a form of development of the anti-whaling norm. This research found that Japan is a country that chooses not to this norm with several reasons that state as a strong background for not including and not accepting the norm. This is evidenced by the continuing Japanese whaling through the scientific whaling program. If Japan stops this norm, so all Japanese whaling practices will also stop. The Japanese decision was the result of consideration in understanding norms through a better social context by Japan itself and Japanese society in general who could state in the concept of legitimacy of international norms. This decision was taken from Japan to decide to withdraw from the International Whaling Commission (IWC) in December 2018 which is also Japan's behavior after understanding this social context.