Vaginal opening is as painful as cracking, considering the symptoms of excessive sexual intercourse, vaginitis, and childbirth side-cutting and cracking. 1. Excessive sexual intercourse: If you have excessive sexual intercourse, you will rub the vaginal opening area repeatedly, forming cracks, and then you will have the symptom of pain like vaginal opening. 2. Vaginitis: the main manifestation of vaginal inflammation is increased secretion and vaginal itching, especially vulvovaginal pseudomyxomatosis, itching will be particularly intense, and lasts for a long time, the symptoms are more pronounced in the evening, some patients can not help but scratch, which will lead to the vaginal opening part of the cracks, pain. 3. Delivery side cut crack: in the process of delivery if the fetus is relatively large may need to make a side cut on the vagina, if you do not pay attention to the future, will cause the side cut crack, there will be very serious pain, it is recommended to go to the hospital in time to deal with. Patients with pain like vaginal fissure should go to the hospital for detailed examination, symptomatic treatment for the cause, and usually pay attention to personal hygiene.