Drug scraping is to achieve the purpose of scraping the uterus through the method of taking medication, mostly seen in women with a thicker uterine lining, or uterine cavity has a relatively small polyp. Some women have a small amount of embryonic tissue left after abortion or drug abortion, can do drug scraping. If you take a progestin-based drug and suddenly stop taking it for 5-7 days, the endometrium loses its hormonal protection after the drug is suddenly stopped, and the endometrium will shed a large amount of blood, resulting in bleeding, thickening of the endometrium, or small polyps on the endometrium, which may be discharged with the shedding of the endometrium.