If you have a nosebleed that won’t stop, you should consult a doctor to find out the cause and follow the doctor’s instructions. Nosebleed can’t be stopped l is mostly due to the rupture of blood vessels in the nasal cavity, at this time should be compressed to stop bleeding, endoscopic treatment to stop bleeding. 1. Compression to stop bleeding: you can pinch both sides of the nose or use a lot of cotton to compress the ruptured blood vessels or use ice packs to apply cold compresses to make the blood vessels contract, so as to achieve the purpose of stopping bleeding. 2. Nasal endoscopic treatment: If compression is not effective, you should look for ruptured blood vessels under nasal endoscopy and use bipolar electrocoagulation to stop the bleeding. Nosebleed can not be stopped, may also be caused by blood system diseases, should be timely medical treatment, and search for the causes of nosebleed, and for the cause of the treatment.