The ASEAN region is located along Japan's critical maritime lifeline and has maintained close cooperation with Japan in various fields for an extended period, making it a pivotal point for Japan's "Indo-Pacific Strategy". To successfully advance this strategy, Japan has strengthened cooperation with ASEAN and its member states in the economic and maritime security sectors through dual-track diplomacy, seeking ASEAN's recognition and support for the strategy. ASEAN views Japan's policies as beneficial to its development and capable of enhancing its strategic autonomy to some extent. However, the regional order constructed by Japan's "Indo-Pacific Strategy" undermines ASEAN's centrality in the regional security architecture and negatively impacts its amicable relations with China. To preserve its centrality, ASEAN introduced the "ASEAN Outlook on the Indo-Pacific", aiming to articulate its vision and stance clearly to maintain its central role in regional affairs. Furthermore, ASEAN employs a hedging strategy amid great power competition to safeguard its interests and actively collaborates with external countries to expand its strategic autonomy.