Nosebleeds and runny nose may be related to acute rhinitis, nasal foreign bodies, nasal sinus tumors and other diseases. It is recommended to go to the ENT department of the hospital in time for examination and consultation, and standardize the treatment under the guidance of the doctor. 1. Acute rhinitis: often caused by decreased resistance and inflammation of surrounding tissues, nasal mucosa is often congested and edematous, blood vessel dilation, increased secretion and runny nose, and nosebleed may also occur. 2. Nasal foreign body: mostly seen in children, nasal cavity due to foreign body stimulation and increased runny nose, can be watery nose, combined with the infection is pus, often due to mucosal damage at the same time the symptoms of nosebleed. 3. Nasal sinus tumors: such as nasal involutional papilloma, nasal lymphoma, etc., often appear nosebleed for no reason, but also the symptoms of running nose. Nosebleeds and runny nose are not only seen in the above diseases, but also allergic rhinitis, cerebrospinal fluid leakage combined with bleeding disorders, etc. Therefore, it is recommended to go to the hospital in time when the above symptoms occur, and follow the doctor’s instructions after clarifying the cause of the disease.