There is no data to prove that cancer patients live longer without treatment, and early treatment is usually recommended. Generally speaking, the survival time of cancer patients has a certain relationship with the psychological factors and disease development of patients: 1. Psychological factors: the psychological factors of patients have different degrees of influence on the disease development of various types of cancer. The cure rate will be higher if the cancer is detected in the early stage, and the timely removal of lesions through surgery can further prevent the reproduction and growth of cancer cells, which can generally prolong life. If the treatment is late, the malignancy of the tumor will gradually increase and the deterioration speed will be accelerated, and the treatment will be relatively difficult, thus affecting the survival time. Some people may think that chemotherapy, radiotherapy and other treatments are also lethal to the normal cells of the body and will affect the health of the body to some extent, so they think that no treatment can protect the normal tissues instead and thus live longer. However, the reality is that it is better to receive regular treatment to prolong the survival time compared to the effects of chemotherapy and radiotherapy. However, some people who are physically weak may not be able to tolerate the toxic side effects of chemotherapy and radiotherapy, which may increase their discomfort, so the specific treatment should be chosen under the guidance of a doctor. Some people have heard from various sources that patients with the same type of cancer do not live as long as those without treatment. This comparison is not scientific and rigorous. Therefore, for cancer patients, early detection, early diagnosis, early treatment and comprehensive treatment with surgery, chemotherapy and radiotherapy according to medical prescriptions are helpful to further control the disease development and prolong life.