Thin endometrium generally refers to the thin lining of the uterus. To promote a thicker endometrium, you can eat foods rich in soy isoflavones, also known as phytoestrogens, such as soy foods, tofu, soy milk, and dried tofu; and foods rich in selenium and zinc, such as garlic, nuts, red meat, oysters, animal liver, eggs, cabbage, and white radish; or mushroom foods, such as shiitake mushrooms and apricot mushrooms; vitamin E can regulate estrogen and promote endometrial growth by eating peanuts, soybeans, melon seeds, Egg yolk, spinach, rape, corn, etc. However, dietary therapy alone can only play a supplementary role and basically cannot achieve the desired effect. Generally, estrogen supplements can be used to promote the thickening of the lining. Simple estrogens, such as estradiol valerate tablets, are usually used in small amounts and are not harmful to the body. However, such drugs must be used under the guidance of a physician, and appropriate liver and kidney function tests should be done before using them. For patients with obesity, they will be asked if there is a history of thrombophilia, family history, etc. If endometrial damage is caused by traumatic factors such as hysterectomy, then oral medication or dietary therapy is not effective, hysteroscopy should be performed, and adhesions should be released before hormonal medication is used to promote endometrial growth. In addition, hyperprolactinemia, polycystic ovary syndrome, thyroid disease, etc., may also cause thin endometrium and should be treated accordingly.