Main functions: to formulate CAS strategies, plans, rules and regulations for international cooperation and academic exchanges; to make annual plans aimed at academy level international cooperation; to conduct negotiations, signing ceremonies and the administration of CAS cooperative agreements with overseas partners; to explore new channels for exchanges and cooperation with foreign organizations; to propose and manage major international cooperative projects of the CAS and its affiliates; and to initiate and manage CAS cooperative programs and fellowships. The Bureau of International Cooperation maintains liaison with related agencies in China dispatched by international organizations, handles relevant affairs concerning S&T cooperation with the Hong Kong SAR, Macao SAR and Taiwan Province, and exercises administrative power involving foreign affairs authorized by the State Council.

Divisions: Division of Comprehensive Affairs, Division of International Cooperation Planning, Division of International Organizations, Division of Asian and African Affairs, Division of European Affairs, Division of American and Oceanian Affairs, and CAS Office of Hong Kong, Macao and Taiwan Affairs.