Bloody nose blowing but no nosebleed is not necessarily nasopharyngeal cancer. There are many reasons for bleeding nose blowing, such as nasal mucous membrane breakage, rhinitis, sinusitis and so on. If you have symptoms of bleeding nose blowing, it is recommended to go to the hospital in time for a clear diagnosis by the doctor. Blood in nose blowing, i.e. snot blood, is one of the manifestations of nasopharyngeal cancer, but it cannot be used to diagnose nasopharyngeal cancer. Nasopharyngeal cancer is most commonly found in the anterior wall of nasopharyngeal roof and pharyngeal crypt, and the main symptoms include blood in nose blowing and sniffing back, nasal congestion, tinnitus, hearing loss, headache and diplopia, as well as enlarged lymph nodes in the neck. Current research shows that the development of nasopharyngeal cancer is related to genetic factors, EBV (human herpes virus), poor dietary habits, environmental factors, such as smoking, air pollution, consumption of preserved foods, etc. Therefore, if you have the symptom of blowing your nose with blood but not nosebleed, you should go to the ENT department of the hospital in time for nasal endoscopy, sinus CT and other examinations to clarify the cause and follow the doctor’s instructions for treatment.