With the acceleration of economic globalization, the role of intellectual property rights in international trade has been increasingly concerned and recognized by the international community. The Agreement on Trade-related Intellectual Property Rights is an important legal document to regulate the protection of intellectual property rights in international trade. It has a far-reaching impact on the innovation and development of all countries. Based on qualitative research, this paper uses quantitative research methods to comprehensively evaluate the impact of TRIPS. In order to achieve this goal, this study is divided into the following four steps: first, this paper reviews the relevant literature and finds that the influence of TRIPS has not been systematically studied in the literature. Secondly, this paper analyzes the provisions of TRIPS agreement and its dispute settlement mechanism by using the method of legal text analysis. In addition, the influence mechanism of different interest groups on the negotiation and signing of TRIPS agreement was obtained by expert interviews. Finally, after obtaining the data, this paper analyzes the impact of TRIPS agreement on intellectual property protection, innovation and foreign direct investment by using econometric model. The results show that the implementation of the Agreement on Trade-related Aspects of Intellectual Property Rights has significantly reduced the number of intellectual property infringement cases, increased the number of intellectual property registrations, and promoted the growth of foreign direct investment. Before the implementation of the Agreement on Trade-related Aspects of Intellectual Property Rights in the United States, there were 39,105 cases of infringement, while in the period after the implementation of the Agreement, there were 25,586 cases of infringement. These changes show that TRIPS Agreement has played an active role in protecting intellectual property rights, promoting innovation and attracting foreign investment.