Unexplained vaginal bleeding can be seen in obstetrical and gynecological diseases and external factors. If the bleeding is heavy, the cause needs to be clarified in time and treated for the cause. Common causes and treatments 1. Endocrine disorders: endocrine disorders cause the ovaries to secrete less estrogen, while the adrenal glands may secrete it instead, thus triggering irregular vaginal bleeding, and the bleeding symptoms are serious. The bleeding caused by trauma is generally injury bleeding, pain is more obvious, treatment plan should be made according to the amount of bleeding, if the amount of bleeding is small, pay attention to the wound disinfection, avoid infection, if necessary, oral antibiotics, such as cephalosporin drugs. If the bleeding is large, carry out vascular ligation on the bleeding point to reduce the amount of bleeding and seek medical consultation in time to save life; 3. Miscarriage: If there is a history of sexual intercourse, consider whether the bleeding is caused by miscarriage, it is recommended to check the urine pregnancy test or draw blood for HCG examination to clarify the cause, early miscarriage is miscarriage before 12 weeks, usually the embryo has died, after all the embryos are expelled, the uterus contracts and bleeding stops, ultrasound examination whether there is residual embryonic tissue in the uterus, oral antibiotics can be taken to prevent intrauterine infection; 4. Gynecological inflammation: vaginal inflammation, cervicitis, pelvic inflammatory disease, etc. Due to pathogen infection, imbalance of vaginal flora, congestion and edema of vaginal wall and cervix, sometimes affected by contact, easy to appear ulceration, bleeding and other symptoms. Patients should be treated with drugs under the guidance of professional doctors, such as local use of metronidazole suppositories, oral metronidazole tablets, etc. Pay attention to personal hygiene, change underwear regularly, and keep the perineum clean and clear. 5. Other: diseases such as endometrial polyps, endometriosis, polycystic ovary syndrome, cervical cancer, etc., also tend to cause vaginal bleeding and need to be clearly diagnosed according to patients’ symptoms and signs and auxiliary examinations. timely treatment.