The small amount of last month’s menstruation may be caused by a variety of reasons, commonly pregnancy, menopause, endocrine disorders, etc., but also may be other gynecological diseases, need to clearly determine, perform targeted treatment. Common causes and treatment 1, pregnancy: women of childbearing age, if incidentally last month’s low menstrual flow, and recent sexual activity, menstruation does not appear to check whether pregnancy, early pregnancy test paper positive combined with vaginal ultrasound found germ can be confirmed. After pregnancy is confirmed, we should enhance nutrition and pregnancy test on time. 2. Menopause: Generally, women around 45 years old start to enter the perimenopause, and their menstrual flow gradually decreases until amenorrhea, which generally does not require special treatment, and timely adjustment of mind and diet structure can be done. 3. It can be adjusted by psychological intervention, and adequate nutrition can be consumed to ensure physical health. Organic endocrine disorders, such as hypothyroidism and reduced secretion of thyroxine, can lead to scanty menstruation, amenorrhea, loss of appetite and chills, etc., which can be determined by checking the total thyroxine and thyroid stimulating hormone levels in the blood. etc., can be treated with oral short-acting contraceptives, spironolactone, metformin and other drugs. The most important thing is to avoid eating spicy and cold food during menstruation; prohibit sexual intercourse to avoid cross-infection; pay attention to the warmth of the abdomen to avoid getting cold.