Thymus gland injection is given when the body resistance and immunity are poor, because thymus gland injection can enhance the immunity on the one hand, and reduce the chance of myocarditis, mouth ulcer, thymic hypoplasia, lung cancer, viral hepatitis and other diseases on the other hand. When there is frequent cold, sore throat, fever, diarrhea, cough and other diseases, you can inject thymus injection appropriately, but thymus injection is not suitable for young children, if the baby’s resistance is poor, you can take drugs such as oral splenomidine to enhance immunity appropriately. Normally, you should pay attention to more rest, eat more fresh vegetables, fruits, etc., go out to do a good job of warm measures to avoid blowing wind and cold.