The long clots that come out of a nosebleed are clots that form after bleeding. After a nosebleed occurs, two clotting mechanisms, endogenous and exogenous, are activated to form a clot to prevent further bleeding. After a nosebleed has occurred, this condition indicates that the body’s clotting function is relatively good. Nosebleeds with mild symptoms can be stopped by compression, while severe nosebleeds are not easy to stop, and need to be treated in the hospital, usually through medication to stop bleeding, filling to stop bleeding and other methods of treatment. Patients should stay away from the triggers of nosebleeds and avoid trauma to the nose. Patients with nosebleeds should actively seek medical attention to identify the cause, follow the doctor’s instructions for treatment, do not self-medication to avoid adverse results.