It is not normal for menstruation to last for more than 10 days, commonly due to endocrine disorders, endometrial polyps, cervical polyps, fibroids, gynecological tumors, etc. 1. 3.Prolonged menstrual period in fertile women with increased volume, accompanied by abdominal pain and anemia, does not exclude that it is caused by fibroids, which can be treated by ultrasound examination and surgery if necessary. 4.Persistent menstrual changes with recent weight loss and anemia do not exclude that it is a malignant tumor such as cervical cancer, endometrial cancer, etc., which requires timely examination, diagnosis and measures for treatment, generally women Normal menstruation is 3-7 days, if there is abnormality, it should be examined and treated in time.