Cancer vaccine therapy is a strategy that utilizes the body's immune system to both prevent and treat cancer. Preventive vaccines work by activating the immune system to identify and destroy cancer-causing infections, such as HPV, which is linked to cervical cancer. Therapeutic vaccines, however, focus on targeting and attacking existing cancer cells, helping the immune system recognize and combat tumors. This promising approach has the potential to complement conventional treatments, lower the risk of cancer recurrence, and improve the overall prognosis for patients. Cancer vaccines are an innovative and evolving field, offering new possibilities for both prevention and treatment, with the potential to work alongside traditional therapies like surgery, chemotherapy, and radiation. this review is based on introduction to some vaccines that are used to eliminate risk of cancer or to treat cancer