Human survival and development are closely related to the ocean. The rational utilization andprotection of the ocean， the building of a "harmonious ocean"， and the achievement of the sustainabledevelopment of the ocean are the ideal of the peoples of the world and are also a common interest of mankind. The International Ocean Institute's Pacem in Maribus （PIM） Conference series has long been wellknown for the process of exploring measures to address global ocean issues， and the conferenceseries has a wide influence. Since their beginning， the PIM conferences have played an important rolein deepening the understanding of the oceans， in strengthening the management and protection ofthe oceans， in ensuring the rational， orderly and sustainable development of the oceans， and in promoting international marine cooperation. At the same time， the PIM conferences played and continue to play an irreplaceable and important role in promoting public awareness and safeguarding marine rights for developing countries.