Loss of menstruation in 2-3 days is not necessarily a case of premature ovarian failure. The duration of menstruation is usually 2-8 days, with an average of 4-6 days. However, if the duration of menstruation is 2-3 days while the volume of menstruation reaches the normal range (20-60 ml), it may be normal. Premature ovarian failure presents as early-onset ovarian insufficiency, usually manifested as the following symptoms: 1. menstrual changes: mainly manifested as frequent or infrequent menstruation, reduced menstrual flow or even amenorrhea, associated with diminished ovarian reserve function and progressive development of functional failure; 2. low estrogen levels: primary amenorrhea is manifested as secondary sexual characteristics, i.e. non-development or poor development of breasts, axillary hair, pubic hair, etc. In secondary amenorrhea, hot flashes and sweating, loss of libido and osteoporosis are common; 3. Other symptoms: such as infertility, vulvovaginal atrophy and osteoporosis. Therefore, shortening of menstrual periods is not the only diagnostic criterion for the occurrence of premature ovarian failure in patients. Factors such as excessive weight loss, mood swings, excessive stress and oral contraceptives can also cause shortening of menstrual periods in women, and patients are advised to visit a hospital to improve basic endocrine measurements and ultrasound examinations to help with diagnosis. If necessary, hormone supplementation therapy, such as the natural estrogens estradiol valerate and 17β-estradiol, as well as natural progestins such as micronized progesterone pills, can be administered under medical supervision. For patients who develop osteoporosis, calcium and vitamin D supplements are also needed to alleviate and improve symptoms.