For people with special diseases such as frailty, the short-term application of immunization injection preparations, most people can reasonably arrange their diet and life, etc. For a short time, it is recommended to use immunoglobulin to improve immunity, which is applied when the human body’s resistance is too low to enhance the body’s resistance, reduce the attack of diseases, especially infectious diseases, and avoid aggravation of the disease. Normal human use of these drugs is not obvious effect, not recommended, if fundamentally improve the immunity of the body, need to strengthen physical exercise, adhere to exercise, breathing fresh air, and develop regular habits of life, especially to avoid staying up late, tired, develop good sleep habits, maintain a good mood, diet as rich as possible, and appropriate more high-quality protein food and liquid food, to Promote normal excretion of urine and feces, maintain normal metabolism, you can also take appropriate oral medication to enhance physical fitness.