The unclean menstruation old a little blood is usually due to endocrine disorders, luteal atrophy, endometrial polyps, endometrial cancer, submucosal fibroids, etc. It is recommended that women go to the gynecological department of the hospital in time, through blood tests, ultrasound, gynecological examination, etc., to clarify the cause and treat the cause. Common causes and treatment 1, endocrine disorders: manifested as irregular menstrual volume, dysmenorrhea, irregular menstruation, etc., can appear unclean menstruation old a little blood. Clinically, there are more treatments for endocrine disorders, and different coping methods are taken for different causes, symptoms and severity of signs. It is usually said that what is lacking is supplemented, for example, luteal insufficiency or atrophic insufficiency can be treated with posterior progesterone; 2. Luteal atrophic insufficiency: that is, irregular shedding of endometrium, which can be manifested as normal menstrual cycle, but prolonged menstrual period and heavy bleeding. Treatment is mainly to regulate the feedback function of hypothalamic-pituitary-ovarian axis, so that the corpus luteum atrophy in time, commonly used drugs have progestin; 3, endometrial polyps: manifested as intermenstrual bleeding, that is, there will be vaginal bleeding in the middle of two menstrual periods, there can be a little blood in the old menstrual period is not clean. Endometrial polyps are mainly treated by hysteroscopy-guided polyp removal or scraping; 4. Endometrial cancer: it can be manifested as abnormal menstruation, i.e. menstrual cycle disorder, increased bleeding and incomplete dripping. The diagnosis of endometrial cancer can be confirmed by diagnosis and scraping, and the treatment is mainly surgery, supplemented by radiotherapy, chemotherapy and hormone therapy. 5.Fibroids: fibroids may cause the veins near the tumor to be squeezed, resulting in congestion and expansion of endometrial venous plexus, thus causing increased menstrual flow, prolonged menstrual period and unclean menstruation with a little blood. The treatment can take the surgical method of myomectomy or hysterectomy, and those who are not suitable for surgery can apply radiotherapy, chemotherapy, hormone therapy and other comprehensive therapies under the guidance of the doctor; 6, other: for example, endometrial atypical hyperplasia, endometrial hyperplasia too long, abnormal thyroid function, etc. can lead to the situation of unclean menstruation with a little blood, it is recommended that women go to the gynecological department of the hospital in a timely manner, clear diagnosis After treatment. When women have coagulation disorders, platelet abnormalities and other diseases, it can also lead to vaginal bleeding, which can be diagnosed through blood tests and ultrasound.