Nosebleeds are more common in children and young people, especially in the hot summer temperatures, often in the absence of obvious causes, suddenly have bright red blood from the nose, light bleeding after a small amount of self-stopping, heavy bleeding more ferocious, appearing face, lips, claws and nails pale, such as not stop bleeding in time, and can even cause shock, such as long-term chronic nosebleeds, can cause hemorrhagic anemia, affecting children’s growth and development, adult dizziness and fatigue, depressed, seriously affecting the quality of life, so we must control bleeding in a timely and effective manner.