Black sticky stuff flowing from the lower body is mainly considered to be related to menstrual flow, endocrine disorders, gynecological inflammation and other reasons. Patients should observe carefully and go to the hospital in time.1. Menstrual flow: During menstruation, due to the increase of estrogen secretion, the endometrium sheds and bleeds and is discharged together with vaginal secretions. When the hemoglobin in it oxidizes, it will become black sticky substance, so don’t worry too much, and you should pay attention to keep warm and rest during the period. 2. Endocrine disorder: factors such as excessive mental tension, taking emergency contraceptives and luteal insufficiency can lead to endocrine disorder and menstrual disorder in patients, and because the blood is not discharged from the vagina in time, the color becomes black and mixed with vaginal secretions with sticky texture. At this time, patients can take Chinese herbal medicines for regulation under the guidance of professional doctors, such as compound motherwort granules and prolotherapy pills. Patients need to control to avoid staying up late to relieve the condition; 3. Gynecological inflammation: such as endometritis, vaginitis, cervicitis, etc. Due to germs infestation, local inflammation, swelling and shedding, triggering bleeding. If the blood stays in the vagina for too long, it may turn black due to the oxidation of iron ions in the blood. At this time, patients should take oral or intramuscular antibiotics as prescribed by the doctor and pay attention to keep the bowels open and reduce pelvic congestion to relieve the uncomfortable symptoms; 4. Reproductive system masses: diseases such as uterine fibroids and cervical cancer may also cause patients to have the above symptoms. As the tumor keeps growing, it affects the contraction of the uterus and compresses the surrounding blood vessels, thus causing bleeding and darkening the color after oxidation. Patients can be treated by surgery or chemotherapy, etc. After surgery, patients should pay attention to rest and avoid overexertion.