Adults with low immunity can improve their immunity by strengthening exercise, supplementing nutrition and combining work and rest. 1. Enhance exercise: Through yoga, swimming, jogging and other aerobic exercise to enhance the physical fitness of individuals so as to enhance the effect of immunity. 2. Supplementary nutrition: Diet should be rich in vitamin A, vitamin C and vitamin D and other foods that help to improve the body’s immunity, such as blueberries, spinach, broccoli, salmon, eggs and so on. 3. Combination of work and rest: daily attention should be paid to the combination of work and rest, to ensure that the rest time, regular routine. Patients who need to improve the body’s immunity can go to the rheumatology and immunology department of regular hospitals and other related departments for detailed consultation, and follow the doctor’s instructions for treatment.