There are many reasons for cervical bleeding, which may be caused by cervicitis, cervical cancer, cervical injury and so on. 1. Cervicitis: it may be due to infection, chemical stimulation, mechanical stimulation or injury, etc. Patients may have increased vaginal discharge and may have symptoms such as bleeding after sexual intercourse and bleeding during menstruation. 2. Cervical cancer: it may be due to HPV infection, sexually transmitted diseases, etc. Patients may have abnormal vaginal discharge, mostly white or bloody, painless vaginal bleeding and other symptoms. 3. Cervical leiomyoma: It may be due to the presence of leiomyoma in the cervical area, which may cause increased menstrual flow. If the leiomyoma presses to both sides, there may be dilatation of the ureter, and symptoms such as lumbar pain and pain in the lower limbs may occur. In addition, cervical bleeding may have other causes, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.