Hysteroscopy is one of the common examination methods in gynecology and can be used to diagnose abnormal uterine bleeding, primary or secondary infertility, and intrauterine foreign bodies. The examination steps are briefly divided into taking appropriate position, local disinfection, cervical dilation, sequential examination, and withdrawal of the cervical canal, etc. The operation steps are as follows: 1. Take appropriate position: the examiner should first empty the bladder and take the bladder truncated position, i.e., the patient lies supine on the examination bed with the buttocks near the bedside and the legs placed on the leg brace to maximize the exposure of the perineum and facilitate the subsequent operation; 2. Local disinfection: after the examiner is ready, the operator Perform routine vulva disinfection and laying of towels, after disinfection, lidocaine can be used for parametrial tissue anesthesia, or anesthetic drugs can be given intravenously before surgery, or intramuscular injection of drugs such as dulcolax and valium, which have a sedative effect; 3, dilate the cervix: use a speculum to peer open the vagina, expose the cervix, then fix the cervix with cervical forceps, use a probe to understand the depth and direction of the uterine cavity, and observe the whole uterus; 4, sequential examination: send the hysteroscope into the The hysteroscope is moved under the premise of good expansion and illumination, and the various parts of the uterine fundus, the opening of the fallopian tubes, the anterior wall of the uterus, the posterior wall of the uterus, the lateral wall of the uterus, the endometrium and the cervical canal are examined in turn for any abnormal lesions; 5. Exit the cervical canal: after the examination is completed, the hysteroscope is slowly withdrawn from the cervical canal and the examination is finished.