If your nose suddenly bleeds, first of all, calm down and do not panic. If blood flows from the front nostrils after you lower your head, pinch your right thumb and forefinger on both sides of the nose for 5-10 minutes and apply a cold compress to the forehead at the same time, and if the bleeding stops, you can observe at home. If the bleeding stops, you can observe at home. If you let go after pinching, but there is still more bleeding from the front nostrils or a lot of bleeding from the posterior nostrils, you should immediately consult the ENT department of the nearest hospital with your family members and further examination is needed to exclude nasal bleeding caused by blood diseases and hypertension. The anterior nostril can also be filled with Vaseline gauze or swelling sponge, and if possible, bilateral electrocoagulation and plasma nasal hemostasis can be performed immediately under nasal endoscopy.