There is a bag in the vaginal opening that doesn’t hurt or itch can be treated with observation, topical medication, or surgery. 1. Observation: a bag in the vaginal opening may be a vestibular cyst, usually if there are no other symptoms, then it is recommended to observe, pay attention to cleanliness and hygiene. 2. Topical medication: if accompanied by inflammation, such as vulvovaginitis, vestibulitis, folliculitis, etc., then you can externally use potassium permanganate scrub, together with mupirocin ointment, erythromycin ointment, etc. together with the treatment. 3. Surgery: If the effect of drug treatment is not good, accompanied by vestibular cyst enlargement, suppuration, then it is necessary to consult a doctor in time, if necessary, surgical treatment. If you find any obvious abnormalities, then it is recommended to consult a doctor in time to avoid delaying the condition.