Increase resistance should be called to increase immunity, immune function is an important defense function of the human body, increase immunity can be strengthened by quitting smoking and alcohol, avoid staying up late, appropriate exercise, balanced diet and other methods. Immune function is an extremely important defense function of the human body, not only to resist the invasion of foreign pathogenic microorganisms, but also to monitor their own diseased tissue cells, which is important to the human body, to increase immunity should quit smoking and drinking, and develop good habits, regular work and rest, avoid staying up all night. In addition, to enhance immunity should also be appropriate physical exercise, such as swimming, playing ball, jogging, etc., in the morning or evening sun, pay attention to the sun should not be in the middle of the day, to avoid the occurrence of solar dermatitis and other diseases, should also pay attention to balanced nutrition, eat more milk, eggs, lean meat, fish, as well as a variety of fruits and vegetables.