A pimple inside the labia is a little rotten, you need to clarify the reason for the appearance of the pimple before treatment. If the pimple inside the labia appears red, swollen, painful and broken, it may be a local inflammation caused by friction, and can be treated by applying antibiotic ointment such as erythromycin ointment. Erythromycin ointment has antiseptic and anti-inflammatory properties and can be used to treat localized infections, and side effects such as skin irritation and allergic reactions may occur after use. If the acne grows next to the labia minora, it may be a vestibular gland cyst formed by the blockage of the vestibular gland duct opening, you can use 1:5000 potassium permanganate solution sitz bath, you can also take oral amoxicillin and other anti-infective drugs to treat the problem, amoxicillin can play an anti-inflammatory role, but part of the population will be nausea, vomiting, diarrhea, and other adverse reactions after taking the drug. However, the role of drugs is limited, and when the symptoms are serious, you need to go to the hospital for surgical treatment. If gray-white cauliflower pattern, may be warts, drug treatment role is limited, need to go to the hospital for laser or surgical method of excision treatment. Therefore, when you find a pimple in the labia, you should go to the hospital in time to have a relevant examination to clarify the cause and be treated under the guidance of the doctor. All of the above medications should be used under the guidance of a doctor, avoid self-medication.