If each period will subside after 1-2 days, consider the existence of endocrine hormone problems: 1, when there is polycystic ovary syndrome, hyperprolactinemia, hyperthyroidism, hypothyroidism, insulin resistance can change the endocrine hormones in the body, affecting the growth of endothelium, so it will shorten the time of menstruation. At this time, you need to check the endocrine hormones in the 2-5th day of menstruation on an empty stomach to exclude whether there is any problem.2. If the menstruation of this month will end in 1-2 days, you must exclude whether there is any chance of conception, because there will be the above mentioned manifestations in the case of pregnancy.3. If the menstruation comes to an end in 1-2 days, you must also exclude whether there is any gynecological disease, and when there is ovarian cysts, it can lead to the decline in the function of the ovaries, thus causing menstrual disorders, and it is also necessary to exclude whether there is any disease. When ovarian cysts are present, they can lead to ovarian dysfunction, thus causing menstrual disorders, which should also be excluded. In addition, uterine adhesion can also lead to a decrease in menstrual flow and shorten the duration of menstruation.