There are mainly the following clinical diseases with bloody nose, and the treatment for each disease is different. The first one is dry rhinitis, and such patients are mainly related to dryness of the nasal cavity, erosion and ulceration of the local mucosa, and bleeding of small local blood vessels. Clinically it is recommended to do nasal endoscopy to exclude other diseases. Clinical treatment can be done by asking the doctor to prescribe compound menthol nasal drops, or nasal rinsing treatment with medical saline, etc. The second type is something growing in the nasal cavity, which is commonly manifested by inversion papilloma, bleeding nasal polyp, cancer of the nasal cavity such as maxillary sinus cancer, septal sinus cancer, etc. resulting in bloody nasal discharge. Generally, in this case, through nasal endoscopy and sinus CT for comprehensive judgment, the clinical can take local pathology first, according to the nature of the lesion, decide whether the next step is surgery or other treatment. Other diseases, such as localized bloody nose caused by foreign body in the nasal cavity, are not very common and may be seen in children.