Vaginal bleeding is bright red. If normal menstrual flow is excluded, it is mainly considered to be related to ovulatory bleeding, drug effects, abnormal pregnancy, cervical polyps, ovarian cancer and other causes. Patients should combine their specific symptoms and undergo relevant examinations for targeted treatment.1. Ovulatory bleeding: After ovulation, estrogen secretion in the patient’s body decreases. As the lower estrogen level is unable to maintain the growth of endometrium, the endometrium is locally shed, which in turn leads to a small amount of vaginal bleeding. Generally, with the increase of hormones, the endometrium can be repaired faster and the bleeding can be stopped, so patients do not need to worry too much. 2. The influence of drugs: such as emergency contraceptives, which contain a large amount of progesterone, promote the growth of the endometrium after taking them to inhibit ovulation and fertilization of eggs. After stopping the pill, the endometrium loses hormonal support and shedding occurs, causing bleeding, the symptoms can gradually disappear in 3-5 days, the patient can first observe; 3, abnormal pregnancy: if the patient has recently had sex without measures, you need to consider the possibility of abnormal pregnancy, common pre-eclampsia, due to the gestational sac out of the uterine wall, resulting in endometrial rupture bleeding. At this time, you need to take progesterone and other drugs under the guidance of the doctor to protect the fetus, and at the same time should pay attention to rest, as far as possible to bed; 4, cervical polyps: abnormal growth of cervical polyps soft and brittle texture, and contains a large number of blood vessels, when it is exposed or affected by external forces, easy to break bleeding. Patients should go to hospital for surgery such as polyp removal to remove the lesion and eliminate the symptoms; 5. Ovarian cancer: due to the continuous development of cancerous tissues and destruction of surrounding tissue structure, it is easy to cause bleeding. Generally speaking, ovarian cancer treatment is mainly based on surgery and supplemented by drugs. According to the patient’s condition, staged surgery and tumor cell reduction surgery can be adopted; 6. Other: for example, ovarian endocrine dysfunction, vaginitis, endometriosis, etc. can also lead to vaginal bleeding.