Abstract: Cancer is a major public health problem worldwide, and although synergistic and comprehensive treatment with traditional Chinese medicine (TCM) has made some promising achievements in recent years, the prevention and treatment situation is still very serious. In order to better utilize the role of Chinese medicine in the clinic to fight against cancer, it is necessary to inherit and innovate at the same time. The author, inspired by the clinical and classical theories, innovatively put forward the theory of "cancer state", and proposed that the root of cancer treatment is to change the "cancer state". In this paper, we reflect on the current situation of TCM synergistic treatment of malignant tumors and analyze the "Cancer State Theory", with the hope of enriching the theoretical base of TCM evidence-based treatment of malignant tumors and providing new ideas and reference for the individualized use of medicines in the clinical TCM evidence-based treatment of malignant tumors.