There are two types of mirrors for hysteroscopy, a rigid hysteroscope and a soft mirror. If the rigid hysteroscope fine diameter 4.5 mirror examination can not need to dilate the uterus, soft mirror examination is also does not need to dilate the uterus, these two kinds of examination pain is mild, the patient tolerance degree is good. Hysteroscopic examination needs to have the corresponding operation, such as hysteroscopic tubal insertion and fluids, need to carry out sequential dilatation of the uterus to 6.5 can enter the mirror. Hysteroscopic surgery, such as hysteroscopic electrosurgery, needs to be carried out in advance to prepare the cervix, and the cervix should be sequentially dilated to No. 10 before laxity of the cervix for microscopic examination. Cervical canal stenosis, cervical scar, postmenopausal cervical atrophy and other cervical dilatation difficulties, the cervix can be softened in advance with drugs, soften the cervix before cervical dilatation, if necessary, the feasibility of local anesthesia of the cervix, to reduce dilatation of the patient’s pain.