The root cause of menstrual discomfort is that the menstrual flow is not smooth and dripping, which may be caused by luteal atrophy of the ovaries or by uterine lesions. The main causes of poor menstrual flow are as follows: 1. ovarian corpus luteum atrophy, the endocrine function of the ovaries is affected by a variety of factors, if in daily life long-term emotional distress, life or study work too much pressure, excessive dieting and weight loss, smoking, drinking bad habits, etc., may lead to ovarian corpus luteum atrophy, so that the endometrium can not be completely stripped, resulting in incomplete menstruation. 2. endometrium In patients suffering from endometritis, the inflammatory lesions of the endometrium lead to endometrial congestion and edema, resulting in poor menstrual outflow and prolonged menstrual periods. 3. Patients suffering from uterine adhesions, cervical adhesions and other diseases, which obstruct the outflow of menstrual blood and make menstruation irregular.