If the endometrium is 1.8 cm thick, if the thickness of the endometrium is measured before menstruation, if there is a history of sexual intercourse, it is recommended that the possibility of pregnancy must be ruled out first, either by doing an early pregnancy test, or by drawing blood for blood HCG. If there is no pregnancy, it is recommended that the clinical history be combined with the clinical history. If such a thick endometrium is accompanied by lower abdominal pain, or if the endometrium is found to be not only thickened but also unevenly echogenic through ultrasound examination, it is recommended to do diagnostic scraping in the 6th-12th hours of menstruation, and the scraped out tissue must be sent for pathological examination, and the pathological diagnosis will prevail in the clinic, and the corresponding treatment will be given according to the pathological diagnosis. If it is inflammation, active anti-inflammation, if it is cancer, it is recommended to give the corresponding treatment according to the specific situation.