Ten days early menstruation is an abnormal phenomenon, which is commonly caused by the following clinical reasons: First, early menstruation caused by taking certain drugs, such as taking emergency contraceptive pills or short-acting contraceptive pills, progesterone, which may lead to early menstruation or endometrial withdrawal bleeding. Secondly, early menstruation caused by certain diseases, such as submucosal fibroids, endometrial polyps or endometrial cancer, may lead to menstrual disorders and early menstruation clinical symptoms. Thirdly, endocrine disorders, due to insufficient function of the corpus luteum, the corpus luteum atrophies early, leading to early menstruation. Clinically, patients with early menstruation should undergo a detailed gynecological examination, mainly to exclude organic lesions, and it is recommended to take a blood test for sex hormone six to know whether the endocrine secretion is normal or not.