A pimple on the labia simplex is usually a problem of hair follicles, more commonly known as folliculitis or inflammation of the sebaceous glands. For hair follicle problems, it may only appear as a small pimple and will not produce significant pain, will not be accompanied by redness of the skin color or itching of the surrounding skin, and can be effectively controlled by using topical skin anti-inflammatory drugs. If there is also a local change in skin condition, consider whether it is caused by skin allergy or external stimulation, which can be controlled with topical anti-allergy medication. If there are more small pimples, it is also necessary to check for vaginal inflammation to see if it is caused by skin irritation. If you can’t recover after treatment for a long time, you need to check if there is HPV infection and see if it is caused by HPV infection of condyloma acuminata.