If a woman is examined for endometrial thickening it can affect her pregnancy. Excessive endometrial thickening is mainly seen in abnormal proliferation of the endometrium, endometrial inflammation, endometrial polyps, endometrial tumor lesions and so on. Excessive proliferation of the endometrium belongs to endocrine disorders, endocrine disorders in women represent abnormal ovarian function, abnormal estrogen and progesterone levels will affect the growth and development of follicles, which will affect the endometrium, proliferation and secretion affecting the implantation of fertilized eggs. Inflammatory diseases of the endometrium lead to localized oedema and exudation of the endometrium, which will result in increased secretions with a foul odor. Severe inflammatory infections will cause destruction of the endometrium, leading to endometriosis and endometrial adhesions, which will affect the implantation of the fertilized egg and the growth and development of the embryo in the uterine cavity. Endometrial polyps and tumors of the endometrium can cause the endometrium to become less tolerant, which can lead to failure of implantation.