Medicinal plant is the most exclusive source of life saving drugs for majority of the world’s population that are commonly available and comparatively economical. Scientists all over the world are concentrating on herbal medicines to boost the immune cells of the body against cancer. With advanced knowledge of molecular science and refinement in isolation and structure, various anticancerous herbs has been identified, which executes their therapeutic effect by inhibiting cancer activating enzymes, hormones, stimulating DNA repair mechanism and enhancing immunity of the body. By understanding the complex synergistic interaction of various constituents of anticancerous medicinal plants, the herbal formulations can be designed to attack the cancerous cells without harming normal cells of the body. Hence the present study is focused on the plants used previously and recently identified for the treatment of cancer and also to reduce the toxic effects of chemotherapy and radiotherapy, particularly to reduce the pain during the treatment.