Erythromycin can be used to treat folliculitis pubis. Folliculitis pubis is caused by blockage of hair follicles in women with local bacterial infection, and it is more likely to be an anaerobic bacterial infection, which is treated very well with erythromycin ointment. The patient needs to clean the local area before use, then apply erythromycin ointment to the local area, 1 day use 3-4 times, after use need to dry the applied local area before wearing clothes, avoid friction. If the patient’s local folliculitis has no obvious effect after erythromycin treatment, and the local lump increases, becomes pus or even ulcerates, this situation can no longer continue to use erythromycin. The patient needs to go to the hospital to find a professional surgeon to cut open the local lumps, remove the pus inside, use iodophor for local disinfection, and then use erythromycin to assist in the treatment.