Women who are menstruating during their menstrual cycle are not coming after two days: in the first case, it may be caused by women who are stimulated by cold, emotional changes or taking drugs to stop bleeding; in the second case, when a woman’s uterine lining is thin and the uterine lining has been stripped clean in two days’ time, the menstruation will be over. The short menstrual period caused by the first condition will be relieved after a woman takes proper rest, keeps her mood stable, handles warmth, and stops taking hemostatic drugs, and can be adjusted during the next menstrual cycle. If it is caused by the second condition, women need to go to the hospital for gynecological ultrasound and sex hormone test. If it is caused by low estrogen, women need to give estrogen for three cycles, and the thin endometrium can be relieved.