When women experience dysfunctional uterine bleeding, if oral medical therapy is ineffective, diagnostic curettage can be used to stop bleeding and to understand the causes of the bleeding. Before undergoing curettage surgery, women should not have sexual intercourse within five days to avoid infections in the reproductive tract. During the curettage process, it is crucial to thoroughly scrape the entire uterine wall, especially the areas around the corners of the uterus. If any abnormal scrapings, such as dirty, greyish-white substances that resemble endometrial cancer, are encountered during the scraping, the procedure should be terminated immediately to avoid causing uterine perforation. For one month after the surgery, sexual intercourse, sitz baths, and swimming should be avoided to prevent infections in the reproductive tract.