Those who have no vaginal diaphragm can have periodic lower abdominal pain without menarche, those who have small holes can have symptoms of poor menstrual flow, and those who have diaphragm in the middle and lower part of the vagina can cause sexual dissatisfaction. Some patients may have no clinical symptoms.

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When checking, first observe the position of the diaphragm, which is rare when it is low, and then observe whether there are small holes (often in the central part) on the diaphragm. Those with holes can insert the uterine cavity probe into the hole to explore the width and depth of the vaginal cavity above the small hole; If there is no hole, you can puncture with a thick needle. Pay attention to the depth of bleeding, so as to estimate the thickness of diaphragm, and then insert the surgical probe through the puncture hole to understand the width and depth of vaginal cavity above diaphragm, so as to make a clear diagnosis.