If the thickness of the endometrium is 1.6cm during ovulation, the endometrium is considered to be thick, which is abnormal, and it should be considered that the patient may have endometrial lesions. Under normal circumstances, during ovulation, the thickness of the endometrium is around 0.7-1.4cm, and an endometrial thickness of 1.6cm during ovulation is considered endometrial overthickness. If the patient is accompanied by abnormal vaginal bleeding, heavy menstruation, prolonged menstrual cycle, etc., it is recommended that the patient undergoes hysteroscopy, which can visually observe the endometrium and observe whether the patient has endometrial polypoid hyperplasia, submucosal leiomyoma, or whether there is the possibility of neoplastic diseases, and if necessary, it is necessary to take the pathology or diagnostic curettage, which can make a clear diagnosis.