Internet is a tool allowing a wide distribution of information. initially reserved to the field of scientific research, it develops currently in many sectors of the socio-economic life and saved the area of the health. Each day appear new services allowing the access to the information on the diagnostic and treatment of different pathologies. Patients and physicians share their knowledge and their information, through newsgroups and electronic mail. This paper presents the Internet and cancer resources to allow clinicians and researchers a rapid access to the relevant information.