If the low menstrual flow is caused by anovulation, progesterone should be given in the second half of menstruation to treat the blood withdrawal, usually dydrogesterone tablets can be chosen. If the low menstrual flow is caused by damage to the uterine lining, such as abortion, curettage, or tubal imaging, or hysteroscopy, etc., in this case, we need to do further hysteroscopy to clarify the diagnosis, and if necessary, we can consider estrogen to grow the lining. If the low menstrual flow is caused by the destruction of tuberculosis mycobacteria, in this case, we need to ask the tuberculosis department for further consultation and treatment. If the menstrual flow is low and the patient does not have fertility requirements, this situation does not require special treatment, but the prerequisite is to monitor the basal body temperature is biphasic.