The condition condition of nosebleeds in junior high school students may have multiple causes, as follows: 1, bad habits: patients are often overly congested and dry nasal mucosa, resulting in local nasal mucosa erosion and bleeding condition. Some patients may be affected by air pollution and excessive dryness, drink less water recently, insufficient vitamin intake, and eat too much spicy, stimulating and fire-prone food, which may trigger nosebleeds. 2, disease factors: Some patients may also have obvious deviations of the nasal septum, hemangiomas, bleeding polyps and other bleeding-prone growths in the nasal tract, and may have systemic disease factors The influence of systemic disease factors, such as blood system diseases, liver and kidney diseases, may lead to nosebleed symptoms.