The correct location of thumb massage to promote menstruation is on the dorsal side of the thumb, there is an acupuncture point called stain making point right below the first joint, because this point is correspondingly small, you can use a ball point pen to massage, press until the local feel sore and swollen is the best. Pressing once in the morning and once in the afternoon, each time 100 presses has the effect of promoting menstruation, the vast majority of continuous massage for 3 days will achieve the purpose of menstruation. If you do not have a period, you can use progesterone to induce menstruation. When pressing the dorsal thumb joint stain point, be sure to rule out the possibility of pregnancy before massaging, so as not to cause lower abdominal pain and other symptoms due to pregnancy and then massage.