The correct medical term for uterine cancer is endometrial cancer, which is a disease caused by malignant lesions in the endometrium. The causes of endometrial cancer are multifaceted, such as anovulation, endocrine disorders, infertility, obesity and other factors that may lead to endometrial cancer. Under normal circumstances, a sexually mature woman will ovulate once a month. However, if there is no ovulation, it will cause functional uterine bleeding and long-term menstrual disorder, so that the endometrium continues to receive estrogen stimulation without progesterone counteracting or insufficient progesterone, and the endometrium lacks cyclical changes and is in proliferation for a long time, which leads to malignant lesions and endometrial cancer. Endocrine disorders can also lead to increased estrogen levels and decreased progesterone levels in the body, resulting in no cyclical changes in the endometrium, thus causing endometrial cancer. The risk of endometrial cancer is significantly higher for primary infertile women than normal women. During pregnancy, the progesterone produced by the placenta can cause the endometrium to undergo corresponding gestational changes, while during lactation, the ovarian function is temporarily inhibited due to the action of hypothalamus and pituitary gland, which makes the endometrium free from estrogen stimulation, while infertile patients do not go through these processes, so they are more likely to develop endometrial cancer. Therefore, the chance of endometrial cancer will increase. In addition, obesity, especially postmenopausal obesity, also obviously increases the risk of endometrial cancer. Therefore, women should exercise properly, pay attention to diet, and develop good living habits.