Diagnostic scraping, often referred to clinically as diagnostic curettage, is an important method used to diagnose disease in the uterine cavity. The procedure involves inserting a spatula into the patient’s uterine cavity and scraping out the endometrium or other tissues for pathologic examination. If the physician suspects cervical duct disease, the cervical duct and the uterine cavity can be scraped separately, which can be referred to as segmental scraping. If you want to perform a diagnostic scraping procedure, you need to pay attention to the corresponding contraindications. 1, suffering from acute cervicitis and other diseases or preoperative body temperature > 37.5 ℃ can not do diagnostic scraping; 2, before the diagnostic scraping procedure patients need to prohibit sex for the first 5 days, at least one month before the operation to stop using sex hormones to avoid incorrect results; 3, infertility patients can choose to do diagnostic scraping before the physiological period or within 12 hours of the onset of the physiological period, can determine the presence of 4. In patients with dysfunctional uterine bleeding, if endometrial hyperplasia is suspected, scraping can be done 1-2 days before menstruation or within 24 hours before the onset of menstruation. If the abnormal vaginal bleeding is prolonged, scraping may be chosen at any time to clarify the diagnosis. 5. If the patient is suspected to have irregular endometrial shedding, the diagnostic scraping procedure may be chosen on the 5th-6th day before menstruation. No anesthesia is usually needed during the diagnostic scraping procedure, but if the patient’s cervical opening is tight and the scraping spoon is not good for entry, local anesthesia or analgesics can be given to relieve pain. Some lesions in the uterine cavity can also be scraped off during the diagnostic scraping procedure. However, repeated scraping during the diagnostic scraping procedure can cause endometritis and other abnormalities. After the scraping procedure, the patient should keep the vulva clean, forbid bathing and sex for 2 weeks, take antibiotics as prescribed by the doctor, and follow up with the hospital and check the pathological examination results after 1 week.