Chemical biology is a science that studies the chemical basis in the process of life. The occurrence and development of diseases are the interference and destruction of life process by pathogenic factors; The prevention and treatment of drugs is an intervention in the pathological process. Chemical biology uses chemical theories and methods to study the chemical basis of life phenomena and life processes, and explores ways and mechanisms to intervene and regulate the occurrence and development of diseases, which provides an essential theoretical basis for the discovery of new drugs.