The main causes of non-menstrual bleeding are as follows: 1. Ovulatory bleeding, which usually occurs in the middle of two periods and lasts for three to five days, mostly in small amounts or in drips, generally does not require treatment, if the bleeding is heavy, you can go to the hospital and be given appropriate medication under the guidance of the doctor. 2. Cervicitis and precancerous cervical lesions, bleeding usually occurs after sexual intercourse, at which time you must go to the hospital and do the corresponding examination, because Early cervical cancer and precancerous lesions cannot be distinguished from cervicitis with the naked eye, so regular cervical cancer screening, i.e. TCT and HPV, is recommended to detect abnormalities and treat them in time. 3. Endometrial lesions, endometrial polyps, submucosal fibroids, etc. can cause abnormal bleeding, often manifesting as prolonged menstrual periods and continuous bleeding. 4. Endocrine disorders, occurring with estrogen or In this case, it is recommended to consult the gynecological endocrinology department.