Sinusitis patients usually do not have nosebleeds, but blood in the nasal mucus, which may be caused by blowing the nose too hard or picking the nose. Sinusitis is often categorized into acute sinusitis and chronic sinusitis, and acute sinusitis patients often appear cold, loss of appetite and other systemic symptoms, and may also be manifested as nasal congestion, pus, headache, loss of sense of smell, etc., and some patients may also be accompanied by blood in the snot phenomenon. If the diagnosis of sinusitis patients with nosebleeds, do not rule out the possibility of blood necrosis nasal polyps or secondary nasal hemangioma. It is recommended that sinusitis patients with nosebleed phenomenon, actively seek medical treatment, systematic examination and clear diagnosis.