Already pregnant, the normal endometrial thickness should be 0.8~1.2cm, endometrial thickness of 0.6cm is not quite normal, at this time it is below the normal value. Women’s endometrial thickness and the body’s hormone levels have a relationship, after a woman is pregnant, the body’s estrogen level will rise significantly, estrogen will promote the thickening of the endometrial lining, so as to play a role in protecting the fetus. The normal endometrial thickness of a pregnant woman is between 0.8 and 1.2cm, which can be better for the development of the embryo and provide nutrition. The endometrial thickness of 0.6cm is on the thin side. At this point, the endometrium is not conducive to embryo implantation, and the embryo does not receive sufficient nutritional supply, which may easily lead to preeclampsia and embryo abortion. Patients should pay close attention to the development of the embryo, and if the endometrium is too thin, they should go to the hospital in time, and under the guidance of the doctor to treat the symptoms.