The most common cause of dripping menstruation is due to hormonal disorders in the body.1. It is mainly due to abnormal estrogen and progesterone levels, which can be further clarified by a hormone level test, preferably on the second day of the menstrual period, for a more accurate hormonal response.2. It is caused by fibroids, when the uterine lining is shed, and if the uterine fibroids are present. On the one hand, it can weaken the contraction of the uterus, thus leading to menstrual dripping, on the other hand, the fibroid itself may have bleeding, which needs to be clarified by ultrasound examination, and the treatment of fibroids also depends on the size, number and location of fibroids, mainly oral medication and surgical treatment. 3. More common is endometrial abnormality, with endometrial cancer being the most common, mainly the duration of menstruation The main symptoms are prolongation of menstrual period and increase of menstrual volume, as well as systemic symptoms caused by the tumor.