1, diet: food diversification, weight control, no burnt food, more starchy food, more vegetables and fruits, do not promote alcohol consumption, reduce the intake of red meat, limit salt and seasonings, do not eat food that has been preserved for too long, etc. 2, every day should adhere to exercise 40-60 minutes, brisk walking or similar intensity exercise. 3.Practice good living and hygiene habits, including no smoking, no partial eating, no full eating, no alcohol and no drug abuse, etc. Change your underwear daily and try to use underwear made of natural fabrics such as cotton, which is beneficial to the prevention of breast cancer and skin cancer. 4. Do not take drugs that may cause cancer, such as hormonal drugs and high-dose vitamins, on a regular basis. These drugs may reduce the immune system and give a chance to cancer development. 5.Minimize the use of toxic plastics. 6. Pay attention to ventilation and don’t stay in a closed environment for too long. For rooms without air conditioning, windows must be opened for 1-2 hours a day. 7, to prevent the retention of pollutants. New clothes bought back first with water before wearing; in hospitals, factories, mines, workshops, after work, should first wash their hands or shower, never bring home the work clothes. 8, sleep enough. Experts point out that adults should ensure 6-8 hours of high-quality sleep every day, the sleep when not sleeping is called “sleep deprivation”. Studies have shown that for every 3 hours of sleep deprivation, the number of lymphocytes in the body will be reduced by 20%, thus causing artificial damage to the immune system. As we know, one third of life is spent in sleep, so it is very important to maintain the quality of sleep to improve the immunity of the body. Therefore, for the sake of health and reducing the occurrence of cancer, people should pay attention to sleep on time and not to overspend sleep time. 9. Pay attention to some specific abnormalities of oneself and have regular health check-ups. 10. Maintain a relaxed mood and reduce stress. Many people who develop cancer look back on the first two or three years of the disease, often in a state of physical and mental stress. Medical research has found that mental stress can reduce immune function, and depression can reduce the body’s ability to repair DNA, which significantly increases the chance of cancer.