The old man’s nose always bleeds, may be caused by the dry environment, may also be caused by dry rhinitis, sinusitis and high blood pressure and other pathological reasons. 1. Environmental dryness: the environment is too dry, the capillaries are brittle, and nosebleeds occur. 2. Dry rhinitis: symptoms such as reduced secretion, persistent nasal congestion, and a strong itching sensation can be present at the same time. 3. Sinusitis: Sinusitis can be characterized by dryness of the nasal cavity and easy rupture of the nasal mucosa, resulting in easy rupture of the nasal capillaries and bleeding. 4. Hypertension: For some patients with high blood pressure, if the blood pressure is poorly controlled, it will lead to blood vessel sclerosis and bleeding. In addition to nosebleeds, there can be oral mucous membrane bleeding, and in severe cases, there will be cerebral hemorrhage. If the old man always nosebleed, need to go to the hospital as soon as possible to find out the cause of nosebleed before treatment.