Internal examination mainly refers to gynecologic examination, which can be divided into the following points: 1. examination of the vagina and cervix for lesions through an endoscope; 2. examination of the uterus and both adnexa through double diagnosis (i.e., the examiner puts two fingers or one finger into the vagina with one hand and the other hand in the abdomen with the examination method): size, position, and abnormal nodules of the uterus; bilateral fallopian tubes and ovaries for pressure pain, thickening, and abnormal masses, etc. 3, If the double palpation is not clear, triple palpation can be performed (i.e., on the basis of double palpation, the fingers can be put into the rectum for examination) to check the paracervical, sacral, main ligament, inner, lateral and posterior pelvic wall, as well as the lesions of the rectal mucosa and the anus. 4. In the case of pregnant women, the internal examination focuses on the cervix to understand the length, texture and degree of dilatation of the cervix. The cervical score is a criterion for cervical maturity, and a mature cervix has a higher success rate when inducing labor.