Complex endometrial hyperplasia cannot always be scraped. Endometrial scraping can easily cause damage to the lining of the uterus, which can lead to uterine adhesions, infertility and infection. Diagnostic scraping of the uterine lining is a process in which the doctor uses a spatula to scrape the lining of the uterus or residual tissue directly out of the uterus, which may cause some damage to the uterus. If the uterus is not repaired properly, the uterine cavity may have adhesions, which may lead to decreased menstrual flow, infertility or miscarriage. Moreover, endometrial scraping is an invasive procedure and infection may occur. Simple endometrial scraping can only scrape the thickened lining and stop bleeding to some extent, but it cannot treat the disease fundamentally. It is recommended that the patient go to a regular hospital in time, complete the relevant examination, under the guidance of a professional doctor to clarify the cause of the disease, and carry out effective treatment.