The Taiwan Affairs Office is an administrative agency under the State Council of the People's Republic of China (PRC).

Under the "one institution with two names" arrangement, it is also the Chinese Communist Party's Taiwan Work Office under the CCP Central Committee; the party title is used for party-to-party interactions with Taiwan.

In 2007, the Taiwan Affairs Office established the Association of Taiwan Investment Enterprises on the Mainland [zh] (ATIEM), consisting of Taiwanese businesses operating in Mainland China.

[4] These include: preparing for negotiations and agreements; direct mail, transport and trade links; propaganda and political influence work related to Taiwan; controlling and censoring media and public relations; handling major incidents;[5] economic planning; intergovernmental exchanges and cooperation; personnel exchanges, observers and symposia; preparing meetings with Taiwanese politicians and officials; and work for international conferences involving Taiwan.

It also manages a wide range of exchanges between mainland China and Taiwan in cultural, economic, and scholarly areas.