The most common diseases of nasopharyngeal cancer, nasal dryness, nasal mucous membrane damage and nasal bleeding are associated with blood in the nose. Dry nasal cavity, broken nasal mucosa and nasal bleeding occur in winter, when the weather is colder, and some patients who like to dig their nose often may lead to this situation, first of all, we should avoid touching the nasal cavity, do not eat some spicy and stimulating food, drink more water, drink more chrysanthemum and honeysuckle tea, you can properly use compound peppermint oil drops to keep the nasal cavity moist. The most common clinical symptoms are blood in the snot, tinnitus, stuffy ears, hearing loss, headache, blurred vision, etc. Therefore, after these symptoms appear, you must seek timely medical treatment, have an electronic nasopharyngolaryngoscopy to look at the nasopharynx, and if necessary, have a magnetic resonance examination of the nasopharynx, and finally confirm the diagnosis by biopsy. The most common pathological type of nasopharyngeal cancer is squamous carcinoma, and the first choice of treatment is intensity-modulated radiotherapy combined with chemotherapy, and generally speaking, the treatment effect of early stage nasopharyngeal cancer is still good, and the 5-year survival rate can reach more than 9580%. In summary, the most common causes of nasopharyngeal carcinoma, nasal dryness, mucosal breakage and nasal bleeding are nasopharyngeal carcinoma, and it is best to go to the local hospital in time to exclude nasopharyngeal carcinoma and treat it symptomatically.