Bleeding from the nose may be due to physiological factors, or it may be a symptom of certain diseases, such as trauma, nasopharyngeal cancer, nasopharyngeal fibro-angioma, etc., and the cause should be identified in a timely manner. 1. Physiological factors: nose bleeding may be caused by the dryness of the mucous membrane of the nasal cavity, especially in the fall and winter seasons, due to the dryness of the climate, the mucous membrane may be dehydrated, which may lead to the increase of the fragility of the capillaries, which is easy to rupture and bleed. 2. Pathologic factors: (1) Trauma: nose always bleeds may be caused by trauma, because the front end of the nose is closer to the deviated part of the nasal septum, so the capillaries are more abundant and distributed in the superficial part of the skin, and repeated digging of the nose can cause nosebleed. (2) Nasopharyngeal cancer: Nose bleeding may be caused by nasopharyngeal cancer. It is clinically found that most of the nasopharyngeal cancer patients will have frequent bleeding in the nose after the disease. (3) Nasopharyngeal fibrous hemangioma: it occurs in adolescents aged 10~25 years old, and the common symptoms are recurrent small amount of nasal bleeding and nasal congestion. If there is bleeding from the nose all the time, you should consult the doctor in time to ask him to clarify the cause of the disease and carry out appropriate examinations if necessary.