Small amount of bleeding a few days before menstruation is considered to be related to changes in hormone levels, polyps, fibroids, etc., and treatment should be based on the cause of the disease through medication, surgery and other ways of treatment. 1. Changes in hormone levels: If the luteal function is insufficient, it will lead to low levels of progesterone in the body, which will not enable the endometrium to undergo a complete secretory phase and cause premenstrual bleeding and prolonged menstruation, etc. At this time, progesterone preparations can be used as prescribed by the doctor in order to maintain the luteal function. 2. Polyps: for patients with endometrial polyps, cervical polyps, due to endometrial or cervical tissues have vascular space-occupying lesions, so the patient will have premenstrual bleeding, prolonged menstrual period and other manifestations, you can follow the doctor’s instructions for the use of progesterone, short-acting contraceptives and other medications, and if necessary, need to be operated on to remove the polyps. 3. Uterine fibroids: as uterine fibroids will lead to the increase of uterine volume and endometrial area, so the patients will have premenstrual bleeding and other irregular vaginal bleeding and heavy menstrual period, etc. If the size of the fibroids is relatively small, it can be reviewed regularly; if the size is large, it can be controlled by progesterone and GnRH as prescribed by the doctor, and the fibroids need to be surgically stripped off or uterine resection if necessary. For patients with small amount of bleeding a few days before menstruation, it is recommended to go to the gynecology department of regular hospitals, improve ultrasound and other related examinations, and then take active treatment under the guidance of doctors after clarifying the cause of the disease.