Thymopeptide is essentially harmless to the kidneys, and no adverse effects on the kidneys have been documented in the drug insert. Thymopeptide is a biologically active polypeptide generally extracted from the thymus gland of healthy calves, which can enhance human immune function as an immunomodulatory drug. The drug is suitable for the treatment of patients with chronic hepatitis B, various primary or secondary T-cell deficiency diseases (e.g., childhood congenital immunodeficiency disease), autoimmune diseases (e.g., systemic lupus erythematosus), various cellular immune insufficiency diseases (e.g., viral hepatitis) and the adjuvant treatment of tumor patients. Adverse reactions to the drug include nausea and dizziness, fever, chest tightness and weakness, drowsiness, patients with chronic hepatitis B may have a transient increase in ALT levels, and individual patients may have a mild allergic reaction, which may disappear after stopping the drug. The drug should be contraindicated in patients who are allergic to the drug, organ transplant recipients, patients with thymic hyperfunction or thymic tumors. It should also be noted that this drug should be used with caution under the age of 18, and liver function should be checked regularly during the use of the drug. Thymopeptide should be taken under the guidance of a professional physician, do not self-medicate to avoid adverse reactions.