Low menstrual flow may be caused by physical problems or low estrogen. Weak physique can be regulated by diet, and low estrogen can be treated by taking estrogen medication, such as estradiol benzoate and estradiol valerate, as prescribed by the doctor. 1. Physical problems: low menstrual flow and physical have a relationship, such as physical weakness, malnutrition may affect the amount of menstruation, you can strengthen the nutrition, eat more green vegetables, lean meat, milk and other foods, to enhance the physical, but also help to increase the amount of menstruation. 2. Low estrogen: Low menstrual flow may be caused by low estrogen levels in the body, which can be treated with estrogenic drugs as prescribed by the doctor, such as estradiol benzoate, estradiol valerate, ethinyl estradiol, ethinyl estradiol, estrone hypogonadotropin, and so on. Therefore, if the menstrual flow is low or leads to physical discomfort, it is necessary to go to the hospital in time for examination, to clarify the cause of the problem and then follow the doctor’s instructions for treatment.