Menstruation refers to menstruation, usually the amount of menstrual flow <20ml can be diagnosed as low menstrual blood flow, if it is caused by irregular work and rest, no treatment is needed; if it is caused by early onset ovarian insufficiency, uterine adhesion and other diseases, it is necessary to take medication, other treatments and surgical treatments according to the cause of the disease. 1. Irregular work and rest: If women have irregular work and rest during menstruation, stay up late for a long time, overwork, it will easily lead to endocrine disorders, and then there will be a decrease in the amount of menstrual blood, amenorrhea and other menstrual abnormalities. Generally, no special treatment is needed, and the condition can be normalized after appropriate self-regulation. 2. Early-onset ovarian insufficiency: common symptoms include hot flashes, decreased menstrual flow and insomnia. Patients should follow the doctor's instructions to apply estrogenic drugs such as estradiol valerate and nil estradiol, as well as progesterone drugs such as progesterone capsules and micronized progesterone pills, and estrogen-progestogen compound preparations such as estradiol dydrogesterone tablets and estradiol cyproterone tablets. 3. Uterine adhesion: Typical symptoms include abnormal menstruation, manifested as reduced menstruation or even amenorrhea, and cyclic abdominal pain. Patients need to apply aspirin and other non-steroidal anti-inflammatory drugs as prescribed by the doctor, which is conducive to the improvement of menstrual abnormalities, and also need to apply 17β estradiol, estriol and other estrogenic drugs as prescribed by the doctor. In severe cases, hysteroscopic hysterosalpingectomy should be considered. Postoperative antibiotics such as ceftriaxone sodium and amoxicillin are required, as well as other treatments such as balloon dilatation and intrauterine placement of a birth control device, mainly to avoid reattachment of adhesions in the uterine cavity after surgery. There may be other reasons for the low menstrual blood flow, and it is recommended that the patient go to the hospital in time to improve the examination, clarify the cause of the disease, and actively treat the primary disease.