Food does not play the same effect as drugs, and only eat a certain kind of food can not achieve the effect of improving immunity, so if the resistance is poor, should be based on a balanced diet to increase the intake of protein. The purpose of a balanced diet is to obtain a variety of different nutrients, which is the basis for improving immunity, and a balanced diet should first of all achieve food diversification, the daily diet should include cereals and potatoes, fruits and vegetables, fish, meat, eggs and milk, soybeans and nuts. On this basis, moderate increase in the intake of high-quality protein such as: milk, yogurt, lean meat, fish and eggs. In addition to diet, appropriate exercise is also very important, minimize sedentary time, move properly every day. If poor resistance is caused by disease, it is recommended to go to the hospital in time, find the cause of the disease and treat the symptoms. If the intake of high-quality protein is low, or poor digestion and absorption, you can supplement whey protein. Clinical resistance can not be directly reflected by which laboratory indicators, it is necessary to comprehensive judgment, such as albumin, total protein, white ball ratio, white blood cells and so on.