There are many reasons for the thickening of the endometrium, which may be caused by the following factors: 1. It may be caused by excessive secretion of estrogen in the body, or by abnormal ovarian function, resulting in incomplete exfoliation of the endometrium, causing thickening of the endometrium, which often occurs during puberty and pre-menopause, that is, more common in perimenopausal women. 2. These patients are often accompanied by increased leukorrhea secretion, odor, abdominal pain, back pain and other uncomfortable symptoms. 3, some women with diabetes, hypertension, obesity, accompanied by irregular vaginal bleeding, endometrial thickening, there is a possibility of endometrial cancer. 4, there are some postmenopausal women, due to endometrial Endometrial lesions can also appear as thickened endometrium. When endometrial thickening, irregular menstruation and bleeding are detected, the diagnosis can usually be made by ultrasound or scraping the uterus.