Internal examination mainly includes internal anal examination and internal vaginal examination. Internal anal examination mainly includes rectal-abdominal palpation and extra-anal finger examination, which can be used to check the rectal condition and the presence of masses, etc. Internal vaginal examination mainly includes double diagnosis, triple diagnosis and prenatal internal examination, which can be used to understand the presence of pressure pain, masses and lesions in the cervix and vagina, etc. It can also be used to determine the position of the fetal head and the articulation of the fetal head, etc.: I. Internal anal examination 1. Rectal-abdominal palpation: After the doctor disinfects both hands and puts on sterile gloves, let the patient take the appropriate position, put one finger through the anus, touch the rectum, instruct the patient to force down and hold his breath, and touch the other hand in the abdomen for examination. It can be used to check the rectum for lesions and the uterus and adnexa of women. 2. External anal finger examination: After disinfecting both hands, the doctor puts on sterile gloves and puts the index finger in contact with the area around the anus to determine whether there are hard lumps, pressure and pain, etc. It is often used to check for hemorrhoids, perianal abscesses, etc. Internal vaginal examination: 1. Double diagnosis: Ask the patient to lie on the examination bed in the bladder truncated position (lying on the back, with the buttocks close to the edge of the bed and the legs spread out on both sides of the bed), and the fingers of the right hand enter slowly along the posterior vaginal wall to probe whether the vagina is open, etc. The other hand assists in the pressure check above the abdomen. The doctor instructs the patient to assume a good position and then puts the middle finger of one hand into the anus to touch the rectum, then puts the index finger into the vagina, and puts the other hand on the abdomen to assist in the examination. It is often used to examine the posterior pelvic cavity and the rectal fossa of the uterus. 3. Internal prenatal examination: the patient is placed in the truncated position, and the doctor inserts the fingers of one hand into the vagina after preparation and places the other hand on top of the abdomen to find out whether the width of the pelvic cavity is suitable for normal delivery, the maturity of the cervix is favorable for normal delivery, and the degree of opening of the cervix. However, for unmarried women transvaginal gynecological examination may rupture the hymen, so recto-abdominal palpation is usually used for unmarried women.