Nosebleed is a very common clinical symptom that can occur at any age. If the bleeding is not very large, first aid treatment can be given at home; if the bleeding is large, it is recommended to go to the hospital and give the corresponding treatment at the same time of first aid treatment. If the nasal bleeding is unilateral, you can compress the nasal wing of the bleeding side, remember not to lift the head to compress, so as not to backflow of blood and affect the airway, or even the possibility of asphyxiation; 2, cold compresses, cold towels on the bridge of the nose, can make the capillaries of the nasal cavity contract to help stop the bleeding; 3, stuffing, sterile cotton balls or clean paper towels can be used to plug the nasal cavity of the bleeding side, about 10-15 minutes to help stop the bleeding.