Thymus peptide, transfer factor and immunoglobulin are all drugs that can improve children’s immunity, but which one is more suitable for children should also be judged according to the child’s physical condition. Thymus peptide can enhance the body’s immune function as well as promote the maturation of lymphocytes, so that the body can play the role of the body to fight infections and improve immunity. However, allergic reaction to this product or organ transplantation is prohibited, in addition there may be fever, dizziness, nausea, chest tightness and other adverse reactions. Transfer factor is mainly used to treat autoimmune deficiency diseases and viral infections. Children can take immune transfer factor to achieve the enhancement of autoimmunity and prevent respiratory tract infections or allergic diseases. However, there will be localized soreness, rash, itching, fever and other adverse reactions reactions. It is prohibited to use with hot food and drinks. Immunoglobulin, also known as gammaglobulin, increases the body’s IgG level and does not harm the body. The use of immunoglobulin not only improves the immunity of the child, but also accelerates the healing of the disease. It is forbidden to use it if you are allergic to immunoglobulin. The exact choice of medication should be made under the guidance of a doctor and according to the child’s physical condition.