Hysteroscopy is needed to rule out lesions in the uterine cavity when a woman has endometrial thickening, endometrial polyps, submucosal fibroids, uterine diverticula, etc., or unexplained uterine bleeding. The cost of hysteroscopy is usually around 1000 RMB. Hysteroscopy usually does not require anesthesia. Before the examination, blood tests are required for routine blood tests, blood type, syphilis, HIV, hepatitis B-5, hepatitis C, electrocardiogram, gynecological ultrasound, etc. The total cost is about 2000-3000 RMB. For hysteroscopy, it is usually done within 3-7 days after menstrual cleansing. Since the endometrium is thinner during this period, the site and size of lesions in the uterine cavity, uterine horn, uterine fundus and cervical canal can be clearly seen. The preoperative tests for hysteroscopy can vary slightly from one level of hospital to another. After the hysteroscopy, women must be given anti-inflammatory and anti-infective treatment, and they should take proper rest. Depending on the condition, hysteroscopy is a direct diagnostic method to detect lesions in the uterine cavity and the technology is very mature.