Menstruation refers to menstruation. If menstruation does not stop after more than ten days, it may be due to endocrine disorders, abnormal pregnancy, luteal atrophy insufficiency and other reasons. 1. Endocrine disorders: due to emotional stress, environmental factors, bad habits, etc., may lead to an imbalance in the secretion of estrogen and progesterone in the body, especially when the level of estrogen secretion is relatively high, which may stimulate the endometrium to proliferate, and then appear the symptoms of menstruation for more than 10 days and still do not stop. 2 Abnormal pregnancy: For women who have sex without taking contraceptive measures during sex and are already pregnant, but when there are conditions such as pre-eclampsia or ectopic pregnancy after pregnancy, vaginal bleeding may also occur, which may be accompanied by different degrees of abdominal pain and be mistaken for menstruation. 3. Luteal atrophy: Due to luteal atrophy, estrogen and progesterone cannot fall rapidly, which leads to irregular shedding of the uterine lining, prolonged menstrual period and increased menstrual bleeding. In addition to the above reasons, if menstruation does not stop after 10 days, it may be related to uterine fibroids, adenomyosis, endometrial cancer, cervical cancer, uterine diverticulum, etc. It is recommended to go to the hospital for ultrasound of uterine adnexa, hysteroscopy and other examinations to clarify the cause of the disease, and then treat for the cause of the disease under the guidance of the doctor.