The Pacific islands leaders meeting which began in 1997 is a regional conference organization initiated by Japan. It is held every three years and has been held eight times. The reason why Japan dominated the summit is apparently to help the island countries to achieve sustainable economic development and seek overall stability in the Asia Pacific region. Actually，Japan regards the summit as the main measure for promoting the new regional policies to achieve the strategic goal of “maritime power”. With the changes of the domestic political environment in Japan and the changes of the international situation，the summit has experienced three periods of start-up，development and the new stage，each with distinctive characteristics. The summit brought Japan political benefits，and provided it an opportunity to promote advanced technology to the world. At the same time，the summit alleviated economic predicament of the island countries and satisfied the island countries' interest demands to a certain extent. Focusing on the development trend and significance of the summit will be conducive to the cooperation and effectiveness of China and the Pacific island countries.