Weakly positive herpes simplex virus type 1 IgM antibody in men suggests a recent herpes simplex virus infection and requires antiviral treatment as appropriate. Herpes simplex virus type 1 IgM antibody is an early antibody that appears after the initial infection and usually disappears within 8 weeks. If there are no clinical symptoms indicating a strong immune system, it manifests as an insidious infection and can be observed dynamically without treatment. If it is accompanied by the appearance of herpes on the body, it is the onset stage and can be treated with antiviral drugs such as acyclovir. Herpes simplex virus type 1 IgM antibody is indicative of recent infection. If a male patient is weakly positive for this antibody, it is recommended that he undergoes a complete set of related tests and undergoes standardized diagnosis and treatment under the guidance of a doctor.