Tourism is a pillar industry in the pacific island countries. Under the background of “One Belt and One Road” and“Community of Common Destiny for All Mankind”，it is of great strategic significance for China to carry out tourism diplomacy in pacific island countries. Based on the systematic exposition of the connotation and research status of tourism diplomacy，this article analyzes in detail the realistic foundation for tourism diplomacy between China and pacific island countries，and then puts forward the target of serving the major-country diplomacy with Chinese characteristics，promoting the mutual benefit and win-win of the two countries，promoting commonality among the people and cultural exchanges，and implementing the“tourist-based”concept of the two countries' tourism diplomacy development. The article proposes that the tourism diplomacy can be developed from the aspects of improving the tourism cooperation policy，promoting the construction of regional tourism organizations，strengthening the construction of tourism safety system，promoting the construction of tourism infrastructure and service facilities，and accelerating the construction of tourism center cities.