Sudden nosebleeds in children are usually caused by nasal trauma, impact on the nose, digging the nose to damage the nasal mucosa and other causes of nosebleeds, you can take a cold compress, compression of the nose method to alleviate, but it may also be due to local inflammation of the nasal cavity, it is recommended to consult a doctor in a timely manner, and under the guidance of the doctor to carry out treatment. 1. Cold compress: Parents can take cold towels or ice packs on the forehead or neck, as well as gargle with ice water, so that the blood vessels contract, can effectively reduce the patient’s nasal bleeding. 2. Pressure on the nose method: Try to let the child take a sitting position, not lying down, to avoid blood flow into the throat, resulting in stomach discomfort. Parents can use their thumb index finger to pinch both sides of the nose for about 10-20 minutes, if you are sure which nostril is bleeding you can also directly squeeze the bleeding nostril. There are also other causes of bleeding, such as blood disorders that lead to abnormal clotting. If there is still a lot of bleeding with other symptoms, you should go to the hospital as soon as possible to get the right treatment for the cause of the bleeding.