Children with nosebleeds usually hang up the ear, nose and throat department, children with nosebleeds are usually due to dry nasal mucosa, nasal trauma, blood and other reasons. 1. Nasal mucous membrane dryness: bleeding due to dry nasal mucous membrane, surface capillaries or rupture. In this case, the amount of bleeding is not too large. Generally, it is related to the child’s bad habits, such as drinking less water and digging the nose often. It should be examined in the ear, nose and throat department of the hospital in time. 2. Nasal trauma: for example, touching the nose, foreign objects entering the nasal cavity leading to blood vessel rupture and bleeding. Usually the amount of bleeding is very large. Children need to go to the ENT department of the hospital in time for further examination and diagnosis. 3. Blood: If there is a blood problem, children usually have more bleeding or bruising after a collision, which will not go away for a long time. It is necessary to go to ENT department for routine blood test and coagulation system test. Children with nosebleeds should pay attention to drink more water in general, prohibit children from picking their noses frequently, and maintain proper humidity in the room. Should promptly go to the hospital otorhinolaryngology under the guidance of the doctor to clarify the cause of standardized treatment.