Before hysteroscopy, you should pay attention to the examination time, perfect the relevant examination, prohibit sexual life and other matters. 1. Examination time: hysteroscopy is usually carried out in 3~7 days after menstruation, at this time, the endothelium is still relatively thin, so the examination is to facilitate the discovery of uterine pathology, if the patient’s main clinical manifestation is irregular vaginal bleeding, the examination can be perfected when the amount of bleeding decreases. 2. Improve the relevant examination: because hysteroscopy is performed under general anesthesia or lumbar anesthesia, so before the operation, it is necessary to improve the blood routine, coagulation function, biochemistry, leukorrhea routine, electrocardiogram, immunity eight, HIV and other relevant examinations, in order to exclude contraindications to the operation. 3. Prohibition of sexual intercourse: sexual intercourse should be prohibited 48 hours before the operation so as not to affect the accuracy of the examination results. For women who need to perfect hysteroscopy, it is important to pay attention to the above matters, so as not to affect the examination results or lead to endometritis and other gynecological infections.