Generally interferon injection for 4-6 weeks is a course of treatment, due to the type of disease, the severity of the disease and the sensitivity to interferon and other differences, so the specific interferon need to inject how long, need to be based on the clinician’s arrangements and the needs of the disease to decide. If it is for the treatment of diseases such as liver, it usually takes longer; if it is for the treatment of human papillomavirus infection, it is usually reviewed in the hospital after one month of medication and the medication needs to be adjusted according to the test results. Interferon is a kind of glycoprotein with species specificity, which can be used for the treatment of viral infections, inhibition of cell proliferation, regulation of immune function as well as anti-tumor effects, allergic body needs to be used with caution.