There may be various reasons for menstruation with only a little blood and then it disappears. It is necessary to clarify whether the blood is a small amount of menstruation or an abnormal bleeding phenomenon. Usually it is related to endocrine disorder, pregnancy, ovarian function decline, uterine adhesions, etc. The causes need to be clarified and treated accordingly. Common causes and treatments 1. Endocrine disorders: Commonly caused by abnormal secretion of estrogen and progesterone, which may lead to menstrual cycle disorder and low menstrual flow. The diagnosis should be clarified by checking sex hormone six, and treatment may require hormonal drugs. 2. Pregnancy: When a fertilized egg is laid in early pregnancy, there may be a small amount of vaginal bleeding, sometimes accompanied by abdominal pain, which may be mistaken for menstruation, accompanied by loss of appetite, nausea, vomiting and other symptoms. Blood HCG and ultrasonography should be performed to confirm the diagnosis, if it is a normal pregnancy, if it is an ectopic pregnancy, medication or surgery should be given to terminate the pregnancy; 3, ovarian function decline: there may be low menstrual volume, dark red, accompanied by symptoms such as facial baking heat, irritability, etc. It is recommended to draw blood for sex hormone six and ultrasonography to confirm the diagnosis, and choose ovulation treatment and immunotherapy under the guidance of physicians; 4, uterine cavity adhesion: there may be low menstrual volume accompanied by The diagnosis can be confirmed by ultrasound and hysteroscopy, and the medication can be applied with antibiotics and estrogen as prescribed by the doctor, and balloon dilation can also be used. The daily attention should be paid to avoid getting cold, ensure sufficient rest, do not stay up late, eat more nutritious and easily digestible food, avoid spicy and stimulating, raw and cold food, etc.