There is usually no conclusive evidence to confirm that food can directly improve immunity, but it is recommended that during the epidemic period, you can eat foods rich in high protein, as well as fresh vegetables, fruits and other foods, while appropriate physical activities will help to strengthen the body, which in turn will help to improve immunity as well. Immunity is the immune function, which has the ability to resist disease, prevent viruses and bacteria from invading the body, detect and deal with abnormal or aged cells in the body in a timely manner, and maintain the stability of the environment within the body. Studies have shown that a balanced diet helps maintain the intestinal flora of the human body, thus playing a more positive role in assisting the human immune system. Factors such as malnutrition, obesity caused by over-eating, poor mental health, lack of proper exercise, and disease can all lead to low immunity. Eating high-protein foods, such as eggs, lean meat, milk, fish, nuts, etc., as well as fresh fruits and vegetables, such as apples, grapefruit, celery, spinach, mushrooms, fungus, etc., are rich in nutrients that can replenish the body with nutrients, which will help to minimize the chances of illness. At the same time, it is also necessary to maintain a healthy lifestyle and optimism, regular work and rest, avoid staying up late and ensure adequate sleep. Appropriate sports, such as running, swimming, playing badminton, etc., can enhance physical fitness, also help to reduce the incidence of the disease, but exercise should pay attention to appropriate, to avoid excessive fatigue.