Nosebleeds are not hereditary, and the main causes of nosebleeds are as follows: first, the patient’s nasal mucosa is very dry, or there is inflammation of the nasal mucosa, which is especially prone to rupture and lead to nasal bleeding. Second, the patient has suffered trauma, sometimes combined with nasal bone fracture, nasal mucosa contusion, so there will be bleeding. Third, the patient has blood system disease, the coagulation function is not good. Fourth, the patient has polyps or tumors in the nasal cavity, and there is also a possibility that the deviated nasal septum is locally in contact with the inferior turbinate, which is also easy to lead to nasal bleeding. Fifth, the patient has systemic system diseases, such as liver and kidney failure, immune system diseases are also easy to cause nasal bleeding. If patients often have nosebleeds in their life, they must go to the hospital for a detailed examination to clarify the cause of the disease and then actively treat it.