Thymofaxine is a kind of immune enhancer, and its main efficacy and effect are to enhance the body’s immunity and used in the treatment of viral hepatitis, autoimmune deficiency diseases and several other aspects. 1. Main effects: Thymofaxine can stimulate the division of lymphocytes in the blood to promote the maturation of T-lymphocytes, increase the secretion of antigen-activated T-cells, and secrete more interferon, interleukin and so on, so as to achieve the efficacy of enhancing the body’s immunity. 2. Main effects: In clinical practice, Thymofaxine is mainly used to enhance immunity and for the treatment of immunodeficiency diseases. (1) Thymofaxine can enhance the immunity of patients and increase their immune response to viral vaccines, such as influenza vaccine and hepatitis B vaccine. (2) Chronic hepatitis B patients can enhance the body resistance through the use of thymofaxine, so as to achieve the purpose of the treatment of chronic hepatitis B. (3) Autoimmune diseases such as rheumatoid arthritis and lupus erythematosus can be treated with Thymofaxine to enhance the body’s immunity. Thymofaxine is well tolerated in most cases and has no special contraindications, but some chronic hepatitis B patients may experience fluctuation of transaminases during the use of the drug, and if symptoms such as right upper abdominal discomfort, anorexia and fatigue occur during the use of the drug, it is considered that the liver function is impaired, and prompt medical attention is needed. Thymofaxine should be used under the guidance of a doctor, avoid self-medication.