Bleeding again after the menstrual period: 1, may be caused by pregnancy, such as preeclampsia, ectopic pregnancy, biochemical pregnancy may occur, need to be further combined with gynecological ultrasound, blood HCG value to further clarify the diagnosis, according to the examination to determine how to deal with the next step. 2, can also be seen in the organism of the lesion caused by, such as endometrial polyps, submucosal fibroids, uterine keloidal diverticulum, etc., may occur. 3, can also be caused by menstrual disorders, if the patient recently appeared mental tension, emotional fluctuations, environmental changes, and so on. This situation may occur, the need for further gynecological ultrasound, if necessary, hysteroscopy to clarify the diagnosis. 3, can also be seen in menstrual disorders caused by the patient’s recent mental tension, emotional fluctuations, changes in the environment, etc., may also occur irregular menstruation, the need for further examination of gynecological ultrasound, sex hormone six, thyroid function, etc. to clarify the diagnosis.