Low menstrual flow by taking digoxin tablets indicates that one does not produce enough estrogen and should supplement estrogen during the first half of menstruation. A menstrual cycle is divided into three phases, such as the proliferative phase, the secretory phase and the menstrual phase. In the proliferative phase, the endometrium thickens rapidly under the action of estrogen, and in the secretory phase, the endometrium continues to thicken under the action of estrogen and progesterone. If estrogen production is insufficient, thin endometrium will lead to low menstrual flow. To understand the underlying cause of low menstrual flow, it is best to go to the hospital on the 2nd-4th day of menstruation to have a blood test for hormone 6 to understand the basic secretion function of the ovaries. If necessary, estrogen and progestin sequential therapy can be given, but the medication must be applied under the guidance of a physician.