Interferons include interferon γ-1b, α-2b interferon, interferon β-1a interferon β-1b, etc. The efficacy and effects of different types of interferons vary. 1. Interferon γ-1b: Interferon γ-1b is a drug that affects the immune function, and is mainly used in the clinic to reduce the frequency and severity of serious infections associated with chronic granulomatous disease. 2. α-2b interferon: recombinant human interferon A2B acts as the main drug for local viral therapy, which can bind to the skin or mucous membranes and inhibit viral replication in order to control viral infections and play a local antiviral role. 3. Interferon β-1a: Recombinant human interferon β1a injection belongs to immune-enhancing agents, which can play a certain therapeutic role in the clinic for patients with multiple sclerosis who have had at least two episodes in the past two years. 4. Interferon β-1b: Interferon β-1b has the dual effects of anti-virus and immunomodulation. It is mainly used in the treatment of relapsing multiple sclerosis. When patients use interferon, it is recommended to standardize the application under the guidance of a doctor, do not blindly use the drug by yourself, so as not to cause adverse consequences.