Most nosebleeds are caused by the rupture of blood vessels in the nasal cavity, independent of gender, the causes are the same for men and women, possible causes include improper diet, bad habits, rhinitis and sinusitis, foreign bodies in the nasal cavity, thrombocytopenia, etc., which need to be combined with physical conditions and examination results to clarify the cause. 1, improper diet: excessive consumption of spicy and stimulating food and lack of water will lead to fire and cause nosebleeds, it is recommended that Light diet, eat more vegetables and fruits such as watermelon, pear, green vegetables, drink more water, eat less hot pot, barbecue, etc.; 2, bad habits: often stay up late playing games, watching TV will damage the body, the symptoms of nosebleeds, it is recommended to ensure enough rest and sleep, avoid staying up late. In addition, usually often picking nose, forceful nose blowing, etc. may also cause the rupture of nasal blood vessels, resulting in nasal bleeding; 3, rhinitis and sinusitis: inflammation of the mucosa of the nasal cavity can lead to dryness or erosion, rupture, resulting in symptoms of nasal bleeding, it is recommended to actively anti-inflammatory treatment, systemic application of antibiotics, but also local use of nasal drops treatment, while maintaining a suitable indoor temperature to avoid dry environment to make the nasal mucosa 4, nasal foreign body: if there is frequent nasal bleeding with foreign body feeling, it is recommended to perform nasal examination to confirm the diagnosis, it may be inadvertently inserted into the nasal cavity, but the patient did not care, resulting in the destruction of the nasal mucosa blood vessels, resulting in nasal bleeding; 5, platelet reduction: allergic purpura, hemophilia and other blood disorders can lead to a reduction in platelets, abnormal coagulation function, and nosebleeds are not easy to stop. At this time, routine blood and coagulation function tests should be performed to confirm the diagnosis, while applying hemostatic drugs to treat and replenish coagulation factors, and if necessary, seek further medical treatment; 6. If the symptoms are mild, it can be observed first, but if the symptoms are serious, it is necessary to use drugs to apply, and patients should try to avoid the above situation.