Interferon can treat herpes. Interferon is a class of naturally occurring small protein molecules produced and secreted by cells in response to viral infection or a variety of synthetic and biologically induced effects, and it is divided into two main categories, type I and type II, not every interferon has all the activities, among which recombinant interferon alpha-2a, alpha-2b and alpha-1b have broad-spectrum antiviral, antitumor and immunomodulatory functions, which can bind to cell surface receptors and induce cells to produce a variety of antiviral proteins, thus inhibiting the replication of viruses in cells. It can enhance the specific cytotoxic effect of macrophage lymphocytes on target cells by regulating immune function and curbing the occurrence of viral information and infection. It can also enhance the activity of natural killer cells, inhibit the growth of tumor cells and remove early tumor cells, etc. Therefore, recombinant interferon α-2a, α-1b and α-2b can treat herpes.