The multiple bumps on the labia majora after menstruation may be caused by folliculitis, eczema, warts, etc. They can be treated with erythromycin ointment, saline compresses, and fluorouracil cream. 1. Folliculitis: Bacterial infections in the vulva can lead to folliculitis and multiple bumps. It can be treated by local topical erythromycin ointment, mupirocin ointment and other drugs, and severe symptoms can be oral cefixime, amoxicillin and other anti-infective drugs. 2. Eczema: may be due to the use of impermeable sanitary napkins during menstruation and resistance to decline caused by vulvar eczema can be manifested in the labia majora more than small bumps. You can use saline to apply wet compresses to the labia majora, zinc oxide ointment can be used locally when the bumps are not ruptured, and when the bumps are ruptured with exudate, 3% boric acid solution should be used to apply cold wet compresses. 3. Warts: They are caused by the human papilloma virus attacking the labia majora, which can cause small bumps in the labia majora. The use of laser, electrocautery and other ways to remove warts; local topical fluorouracil cream, imiquimod cream, etc.; with the use of transfer factor, thymine or local topical α-interferon gel and other antiviral and immunity drugs, to prevent the recurrence of the disease. After the menstrual period, the labia majora have more than one small bumps should go to the hospital in time to improve the examination, clear the cause of the disease and then give targeted treatment.