Currently, there are more than 14 million new cases of cancer globally each year, and 8.2 million people worldwide die of cancer each year. The map of cancer incidence shows that the incidence of cancer in China is at the medium level of the world, at 2.8%, and the death rate is at the medium-high level, at 27%. Cancer has become the first killer of human beings in the new century. At the present stage, “fear of cancer” mentality is quite common among the masses, and some patients think that getting cancer is equal to sentencing to death, so they give up the treatment. China Anti-cancer Association advocated and initiated the Tumor Prevention and Control Awareness Week from 1995, aiming to widely publicize the popular knowledge of cancer prevention and control through various forms, so that the general public can improve their awareness of cancer prevention and increase scientific knowledge, thus further promoting the development of China’s cancer prevention and control system and the promotion of the development of cancer prevention and control in the country, The purpose of the week is to widely publicize anti-cancer and anti-cancer scientific knowledge through various forms, so that the general public can raise their awareness of cancer prevention and increase their scientific knowledge, thus further promoting the healthy development of China’s anti-cancer cause and scientific popularization. The 23rd National Tumor Prevention and Control Awareness Week was carried out nationwide from April 15 to 21, 2017, with the theme of this awareness week as “Scientific Cancer Prevention and Care for Life” and the sub-theme as “Strengthening Health Education and Keeping Away from Bad Habits”. In this regard, Harbin Chest Hospital oncology ward one specially summarizes the cancer prevention and treatment knowledge for you, I hope to be able to help you in the prevention and treatment of cancer on the road to swollen a section with you to prevent cancer, cure cancer. Cancer prevention: 1, have a good state of mind to deal with stress, combine work and rest, do not overwork. Balance the mind, mental health. 2.Strengthen physical exercise, enhance physical fitness, improve immunity, within the normal weight range, the thinner the better. 3.Good living habits, regular work and rest. 4, do not eat contaminated food and water, eat more green vegetables, but not too much salty and spicy food, do not eat too hot, too cold, expired and spoiled food, quit smoking and limit alcohol, limit the calorie density of food (especially high sugar or low-fiber or high-fat processed food). Prevent diseases from entering by mouth. 5.Prevent infection: mold (Aspergillus flavus is related to liver cancer), virus (EB virus is related to nasopharyngeal carcinoma), bacteria (bacteria can reduce nitrate to nitrite, which can be converted to nitrosamine), parasite (bladder cancer is related to schistosomiasis) can all lead to the occurrence of tumor. 6.Reduce undesirable environmental interference: avoid living in the newly renovated rooms, stay away from ionizing radiation, ultraviolet rays, excessive sunlight, avoid contacting with fibrous materials (such as asbestos nets, glass wires, etc.) and so on. 7. Take the initiative to do a cancer checkup every year. People with family history of tumor should check their body twice a year, while healthy people are recommended to check once a year. Cancer treatment 1. Early detection, early treatment: take active treatment measures, including surgery, radiotherapy, chemotherapy, endocrine therapy, targeted therapy, traditional Chinese medicine and other ways, while paying attention to joint treatment, so as to achieve the effect of inhibiting the spread of cancer cells and alleviating the pain of cancer patients. 2. Psychological guidance and lifting of mental burden: Psychological therapy and guidance should be given to the tumor patients to reduce their psychological pressure and burden, so that the patients can understand that many cancers can be cured by fully mobilizing the various positive factors of the body and cooperating with the doctor’s spiritual treatment. 3. Late stage of disease, palliative care: palliative care is an active and comprehensive treatment for patients who can not be cured, which cares about the quality of life rather than the length of life, the two basic principles are to bring as much benefit to the patients as possible and to minimize the damage to the patients as much as possible, and the other three principles include: respect for the patients’ life; respect for the patients’ autonomy; and the fair and reasonable application of the limited resources.