Thymopentin injection belongs to a kind of immunomodulator, usually use 15-30 days as a course of treatment, the specific application time should follow the medical advice. Thymopentin has the effect of enhancing the immunity of human body, and is mostly used for the regulation of low immune function. Generally, for patients who are easy to catch cold or have poor body constitution, one course of thymopentin can be injected to improve immunity. In addition, patients with tumor diseases, such as liver cancer, can also be treated with thymopentin injection. The course of thymopentin injection mainly focuses on the disease, and the new treatment plan will be decided after the target degree is reached after a certain time of medication. During the treatment, a few patients may have adverse reactions such as nausea, chest tightness and drowsiness. During the treatment with thymopentin, it is necessary to pay attention to rest, eat a light diet, eat more vegetables and fruits, and avoid smoking and drinking alcohol.