If there is light bleeding from the vagina, it is commonly caused by the following clinical reasons: firstly, trichomoniasis. After trichomoniasis infection, there will be a large number of bleeding spots on the vaginal mucosa and the capillary rupture will lead to light bleeding, clinically accompanied by vulvar itching, which can be treated with metronidazole. Second, chronic inflammation of the cervix, due to long-term chronic inflammation of the cervix will lead to increased local exudation, local tissue becomes brittle, capillary rupture will lead to light bleeding, this situation should be actively anti-inflammatory treatment, can be given bifontaine pessary topical medication, and recommended oral anti uterine inflammatory tablets. Third, due to local polyps of the cervix, this condition needs to be treated clinically by surgery. For bleeding of the cervix itself, it is recommended to do cervical cancer screening clinically as well. Fourth, due to inflammation of the endometrium caused by exudation, resulting in a small amount of light bleeding, in this case, it is recommended to do ultrasound examination to understand the situation of the endometrium, while giving anti-inflammatory treatment, and if necessary, it is recommended to do diagnostic scraping.