There is no clear standard for how much a nosebleed is considered to be a large amount. If a nosebleed is calculated purely on the basis of the amount of bleeding, a nosebleed that exceeds 100ml is considered to be a large amount of bleeding. If a nosebleed is more serious, it can also be considered a heavy bleed, for example, if a nosebleed cannot be stopped by pinching the nostrils, and the blood can be spit out of the mouth in reverse, the amount of bleeding must be relatively large. When you have a nosebleed, you may find that the blood falls to the ground linearly from the nostrils and continuously, which is considered to be a large amount of bleeding, and the individual is also considered to be a large amount of bleeding if it is ejected from the nostrils. When the amount of nosebleed is relatively large is a large blood vessel rupture, should go to the hospital in time to the Department of Pentaclinic for treatment, can be treated by compression hemostasis, can also be stopped by laser electrocoagulation and other hemostasis, can play a very good effect.