45 years old menstrual drenching is not as far as possible is dysfunctional uterine bleeding, uterine fibroids, endometrial lesions and other reasons, need to be specifically analyzed. 1. dysfunctional uterine bleeding: this is caused by abnormal hormonal changes in the body, the endometrium can not shed regularly, there will be abnormal uterine bleeding and dribbling. 2. Uterine fibroids: if the fibroids are under the mucous membrane, they may cause continuous stimulation to the endometrium, resulting in bleeding and dribbling. 3. Endometrial lesions: If the endometrium has abnormal proliferation or endometrial cancer, it may cause the endometrium to shed continuously, resulting in incessant bleeding. If there are other reasons for the dribbling of menstruation in a 45-year-old woman, it is recommended to go to the hospital in time and take appropriate measures under the guidance of the doctor to deal with the problem and promote the alleviation of the condition.