This study explores the innovative models of international think tank collaboration and their role in enhancing global influence. Through literature reviews and case studies，it identifies the limitations of traditional cooperation methods and proposes several innovative models，including networked cooperation，multilateral transnational collaboration，public-private partnerships（PPP），and joint stakeholder cooperation models. These approaches enhance the interaction efficiency and depth of cooperation among think tanks，strengthening their influence and voice in global policymaking. The study also highlights challenges faced by Beijing think tanks in international exchanges，such as a lack of innovation，incomplete resource coordination mechanisms，and insufficient global influence. Based on international experience，it offers recommendations to diversify collaboration models，improve international engagement mechanisms，and optimize resource coordination，providing theoretical support and empirical evidence for enhancing the international influence of Beijing think tanks.