A normal woman should have one period of 20-60mL, usually 2-8 days, with an average of 4-6 days. Low menstrual flow is almost gone in 3 days, if it has been so and the check of sex hormones and ultrasound are normal, it is usually normal and no special treatment is needed. If the past period has been relatively heavy and the period is long, and suddenly the period decreases and is gone in 3 days, it may be caused by endocrine disorder. It is recommended to adjust diet and sleep, pay attention to warmth, avoid heavy physical labor as much as possible, drink brown sugar water appropriately, or consume warm tonic food such as ginger, red dates, wolfberry, etc. You can also take Chinese medicines for regulation, such as Yimu Cao cream, Wujia Biochemical Capsules, Aihu Nuan Gong Wan, Tian Qi Dysmenorrhea Capsules, etc. If the patient’s short periods and low menstrual flow persist without relief, a sex hormone test and AMH test can be performed. If the condition is caused by premature ovarian failure, estrogen and progestin treatment can be used to slow down the disease progression. If it is caused by polycystic ovary syndrome, medication along with diet and exercise are recommended to regulate the condition.