Thymopentin injection is a drug that regulates immune function, this drug mainly has the effect of enhancing immune function, as an immunomodulator, it is prohibited to be used in patients who have allergic reactions to the ingredients of this drug. In addition, this drug is also prohibited to be used for organ transplant patients because it may enhance the immune function of patients, therefore, this drug should not be used for patients who are receiving immunosuppressive treatment, such as organ transplant patients, except when the benefits of the treatment clearly outweigh the risks. If the patient uses the drug to enhance immune function, it may lead to the failure of immunosuppressive treatment in organ transplant patients, and there is also a possibility of organ rejection, so it is not recommended to use thymopentin in organ transplant patients.