Whether or not it is normal for a patient to have an endometrial thickness of 0.5 cm depends on the patient’s specific situation. Normally, the thickness of a woman’s endometrium is between 0.5 and 1 cm, and the thickness of the endometrium changes with the menstrual cycle, mainly in the following cases: 1. If a woman has an endometrial thickness of 0.5 cm after menstruation and before ovulation, it is 2. If the endometrial thickness of 0.5 cm occurs after ovulation and before the onset of menstruation, the endometrial thinning phenomenon is abnormal and usually does not enable women to have menstruation and can affect their pregnancy; 3. abnormal situation, to promptly identify the cause after treatment.