The thickness of the endometrium is 1.8 cm, which is a relatively thick endometrium. For women of childbearing age, to rule out the possibility of pregnancy, the appropriate HCG should be checked and if the HCG is negative, the possibility of pregnancy should be ruled out in conjunction with whether the woman has abnormal uterine bleeding. Further, hysteroscopy should be performed to find out if there are abnormal endometrial growths, polyps, or other abnormal growths under hysteroscopy. At the same time, endometrial scraping should be performed and follow-up treatment should be performed according to the pathological findings after scraping. Dysfunctional uterine bleeding may be caused by prolonged estrogenic stimulation and may need to be antagonized by progestin. In postmenopausal women with endometrial thickness of 18 mm, hysteroscopy and endoscopy should be performed to guide the subsequent diagnosis and management.