Women with blackened leukorrhea and blood are considered to be related to impending menstruation, ovulation bleeding, endocrine disorders, polyps, uterine fibroids and other diseases. 1. The onset of menstruation: If the patient’s bleeding time is close to the normal menstruation time, at this time due to the body’s estrogen and progesterone levels decline, which will appear a small amount of vaginal bleeding, which may be manifested in the leukorrhea black and blood. 2. Ovulation bleeding: after ovulation, estrogen levels in the body drop significantly, and then can not support the endothelium, some women will appear in the leukorrhea, blackened leukorrhea, or a small amount of vaginal bleeding, usually lasts for 2 to 3 days bleeding can stop by itself. 3. Endocrine disorders: If the patient’s recent work pressure is relatively large or combined with polycystic ovary syndrome, premature ovarian failure and other gynecological endocrine diseases, the patient’s ovulation is irregular or not ovulation, and irregular vaginal bleeding occurs. 4. Organic diseases: For patients with endometrial polyps, uterine fibroids, cervical cancer, endometrial cancer, irregular vaginal bleeding such as darkening of the leukorrhea can also occur. For women with dark leukorrhea and blood, it is recommended that they go to the gynecology department of a regular hospital to improve ultrasound, sex hormones and other related examinations, and to clarify the cause of the disease and then actively treat it under the guidance of the doctor.