1.Population for hysteroscopy Hysteroscopy is a minimally invasive surgery using endoscope to understand the structure of uterine cavity and endometrial morphology. It is suitable for thin endometrium, abnormal endometrial morphology, repeated transplantation failure, suspected uterine malformation or abnormal findings in imaging and other imaging examinations, recurrent miscarriage, vaginal bleeding and other diseases and tubal patency examination. It is possible to perform related treatment at the same time of examination. Unlike gynecology, hysteroscopy in assisted reproduction is not only concerned with the structure of the uterine cavity and the morphology of the endometrium, but also the blood supply and some subtle (seemingly normal) changes of the endometrium, which are directly related to the tolerability of the endometrium. After the examination, the endometrium is not routinely scraped, and special attention is paid to the protection of the endometrium. 2, hysteroscopic surgery time and precautions hysteroscopic surgery can be performed when menstruation is clean, such as tubal lavage preferably not later than 5 days clean, otherwise the endometrium is too thick, easy edema after expansion of the uterus affects the surgical field. Depending on the condition of the endometrium, the doctor in charge may decide to perform the surgery at different times of the menstrual cycle. It is forbidden to have intercourse 3 days before surgery, avoid eating fatty food and being too full before surgery, and drink less water. The procedure is performed with local anesthesia and takes about 10 minutes. No family members are required to accompany you. Except for spring holidays, surgery is performed all day Monday through Friday throughout the year, and no appointment is necessary. After registration, you will be informed of the hysteroscopy when you hand in your registration slip at the nurse’s station. After entering the consultation room, talk, sign and open the fee, then take the white belt and ultrasound examination, then pay the fee and test, bring the white belt report and medicine to the nurse station to confirm the operation, and listen to the nurse’s arrangement to wait for the operation at the entrance of the operation room. 3.Post-operative precautions after hysteroscopy There is no need to be bedridden after surgery, but no straining, and intercourse is prohibited for two weeks after surgery. If an IUD is placed, it is normal to have back pain, cramping and dripping bleeding, and there is no need to consult a doctor. Severe abdominal pain and continuous heavy bleeding should be checked at the center. If there is no discomfort, you can resume your usual fitness activities. Patients with IUDs (IUDs) come to the center for the second clean period after surgery to get the IUD. If it is difficult to clean the IUD completely, only brown discharge without blood does not affect the surgery. If for any reason you cannot come on time, it is okay to postpone the procedure for one or two cycles. In general, if the IUD is removed the following month for transplantation, Dr. Kuang’s patients who have no special instructions in advance can bring back the medication for the transplantation cycle when the IUD is removed, and take estrogen at home for 14 days on the third day of the next cycle before the follow-up appointment for transplantation. For other patients, the transplantation plan is determined by the doctor in charge after IUD removal.