Endometrial cancer refers to cancer occurring in the endometrium, also known as uterine corpus cancer, which is currently on the rise in incidence and is a common malignant tumor in women, second only to cervical cancer in terms of incidence. Although the causes of endometrial cancer have not been fully elucidated, according to the statistics and analysis of patients and epidemiological data, it is found that women who are related to the following factors are prone to endometrial cancer. Risk factors for endometrial cancer: ① Obesity: About 80% of endometrial cancer patients are over 10% of normal average weight. Obesity is a manifestation of endocrine imbalance. The large amount of fat in the body increases the storage of estrogen, which also facilitates androgen aromatization and increases the content of estrogen in blood, leading to endometrial hyperplasia and even cancer. Infertility is a high risk factor for endometrial cancer, and the risk decreases as the number of deliveries increases. Those who are infertile due to prolonged anovulation are more likely to develop the disease compared to women who have had one child. Patients with polycystic ovaries are also prone to this disease for the same reason. (3) Those with menstrual disorders, early menarche or delayed menopause are more likely to develop endometrial cancer. In the period before menopause, it is often in anovulatory state, caused by estrogen without progesterone counteracting and endometrial proliferation changes. ④Related to dietary habits. The relative risk of endometrial cancer increases for those who consume more fat and oil, while vegetables and fruits have a protective effect and make the relative risk decrease. High fat has the function of storing estrogen, which will lead to endometrial hyperplasia and even transformation into cancer. ⑤ Some patients with diabetes mellitus and hypertension can be caused by long-term pituitary abnormalities; women with polycystic ovary syndrome and endometrial atypical hyperplasia have high estrogen levels in their bodies. (6) Those who take exogenous estrogen for a long time for various reasons have an increased likelihood of benefiting from endometrial cancer. Those who use exogenous estrogen alone without progestin counteracting it may increase the risk of endometrial cancer, and it is related to the dose of estrogen used. If progestin is added to counteract it, the risk can be reduced. (7) Uterine bleeding that cannot be cured for a long time, especially postmenopausal uterine bleeding, should be considered as a possible endometrial cancer, and gynecological examination should be conducted quickly for early detection and treatment. (8) The risk of endometrial cancer is two times higher in people with high economic income and higher education compared with poorer people. ⑨ Those who have a history of X-ray exposure are more likely to develop endometrial cancer than those who have no history of X-ray exposure; due to genetic factors, patients with endometrial cancer often have a family history and a history of tumor in close relatives, so those who have a family history of endometrial cancer and a history of tumor in close relatives have a higher risk of developing the disease.