Also called a vaginal speculum, the vaginal speculum probe is about 3.2 centimeters long, and the front wall of the vagina is 7 to 9 cm long and the back wall is 10 to 12 cm long. The vaginal speculum provides a clear view of the vagina and cervix. It can help diagnose some common conditions such as cervical polyps, cervical cysts and cervical erosion. The vaginal speculum lens is about 3.2 cm long, the front wall of the vagina is 7 to 9 cm long, and the back wall is 10 to 12 cm long, so using a vaginal speculum will not cause damage to organs such as the cervix and vagina. However, it should be noted that 3 days before the vaginal speculum examination, avoid coitus, and do not vaginal drug treatment. The best time for the examination is 3 to 7 days after menstruation, when the secretion is relatively small, so it is convenient to take samples for pathological examination. Meanwhile, keep the pubic area dry and hygienic.