Whether the endometrium of 0.8 centimeters is serious or not depends on the time period in which the examination is performed and is judged in detail. For example, if an ultrasound examination is performed 2-3 days after menstruation and shows an endometrial thickness of about 0.8 centimeters, there may be an abnormality. Because of the presence of thickening, treatment by means of scraping or oral medication is recommended. For example, in the middle of menstruation, the presence of an endometrial lining of 0.8 centimeters is very normal and does not require any medication or surgery. For example, if the endometrium is 0.8 centimeters before the menstrual period, that is, 3 or 4 days before the menstrual period, the endometrium is thin. Normally, the endometrium should be around 1.1 cm at this time, close to the time of menstruation. It is recommended to check the endocrine hormone six and depending on the situation, oral progestin is needed for the purpose of growing the endometrium.