Segmental diagnostic scraping refers to scraping the mucosa of cervical canal and endometrial tissue of uterine cavity respectively, which are packed in two specimen bottles, fixed with formalin specimen solution and sent to pathological examination respectively, the main purpose of this is to identify cervical cancer and endometrial cancer, which is mainly applicable to postmenopausal abnormal uterine bleeding, premenopausal excessive menstrual bleeding, menstrual disorders, and bleeding after coitus etc. The specific operation steps are as follows. Specific operation steps are as follows: 1. Routinely disinfect and spread the towel, expose the cervix with speculum, put a piece of small gauze on the lower lip of cervix, and use a small scraping spoon to scrape the cervical canal for one week from the inner to the outer mouth of the cervix in clockwise direction, and then put the scraped out tissues on the gauze and send them to the hospital for examination. Second, use the probe to explore the depth of the uterine cavity, enter the uterine cavity to scrape the endometrial tissue, scraping should pay attention to the size of the uterus, the shape of the uterus, the uterine cavity is smooth or not, it should be a comprehensive scraping, scraping out the material placed on another piece of gauze, put into a specimen bottle for examination, the main purpose is to prevent the cervical tube into the uterine cavity, so as to avoid confusion in the diagnosis.