Abstract: "The right to be forgotten" was a new concept in the proposal provided by the EU Commission while revising the Data Protection Directive(95/46/EC)in 2012, which was supported by the groundbreaking judgment of the European Court of Justice on 13 May 2014. It specifically tried to strengthen the right to self-determination of personal data online, but also triggered a huge controversy in academia. Praises and criticisms about "the right to be forgotten" had mutual fermented, and created an essential inner tension between legislation and application of "the right to be forgotten", which drove the development and innovation of data-protection legislation. The debate of the "the right to be forgotten" originated from the difference of theoretical approaches of personal data protection, and reflected the different interest positions of gamers concealed in the legislation. The complex debate revealed that the final "look" of "the right to be forgotten" is influenced by many factors such as technology, economics and politics of the online community.