Scientific communication is a crucial way to promote the development of Oncology and training of the oncologist. CACA organizes a biannually-held Chinese Conference of Oncology (CCO), which is the largest oncological communication in China, representing the latest development and most advanced progress in Chinese Oncology. The CCO plays an important role in promoting oncological research and enhancing communication with the international oncological communities.

　　In 2006, over 88 foreign delegates from 15 countries (US, UK, Canada, etc), 16 members of Chinese Academy of Engineering, as well as 2680 experts from China (including 48 doctors from Taiwan) participated the 4th CCO, which was the largest conference in the history of the CCO.