After the interferon injection, some people will have adverse reactions, the most common is the influenza-like syndrome, patients will appear fever, muscle pain in the limbs, accompanied by poor, fatigue and other such symptoms, most patients have mild clinical symptoms, do not need special treatment, if the patient’s symptoms are heavy, you can take appropriate oral antipyretic and analgesic drugs. Patients will experience bone marrow suppression, which is manifested by a decrease in white blood cells and platelets, and will generally recover on its own after a week of discontinuing the drug. If the decline in white blood cells and platelets is more pronounced, appropriate leukocyte and platelet-raising drugs are needed. Some patients may experience other adverse effects after long-term interferon injections, such as psychoneurological symptoms, which can lead to hair loss, insomnia, and induce autoimmune diseases.