Abstract: In April 2023, following Japanese Prime Minister Fumio Kishidas “The Future of IndoPacific” address in India, the Japanese government formally unveiled the New Plan for a “Free and Open IndoPacific.” This plan aims to respond to changes in the international political and economic order, strengthen Japans “IndoPacific concept”, emphasize cooperation through “equal dialogue” and “equal partnership”, and propose new four pillars: rules for peace and prosperity, addressing challenges through the “IndoPacific” approach, multilevel connectivity, sea and air security guarantees, and measures for safe use. This plan reflects the impact of various factors on Japans diplomacy, including regional political and economic changes, deepening of the alliance of Japan and the U.S., and rightwing domestic politics. In the future, Japan will also face multiple challenges such as international instability, sluggish domestic situation, and lack of support from regional countries. However, the continuous promotion of the new plan will have a significant impact on Chinas development and SinoJapanese relations, and is worthy of continuous attention.

Key words: Kishida government, “New Plan for a Free and Open Indo-Pacific”, “Indo-Pacific concept”, regional security, Sino-Japanese relations