If there is blood in the nose for more than half a year, it may be caused by cancer in the nose. If such a symptom occurs, it is necessary to seize the time to go to the ENT department of the hospital for examination. In case of nasopharyngeal cancer, the organism will have the phenomenon of backward nasal aspiration with blood, which is usually referred to as retracted snot and blood in clinical practice. If this phenomenon occurs frequently, it belongs to the early stage of nasopharyngeal cancer; if it occurs occasionally, it may be caused by inflammation in the internal nasal area. When determining nasopharyngeal cancer and rhinitis, it is usually determined by other symptoms. Patients with nasopharyngeal cancer usually have nasal congestion, tinnitus, headache, lymph nodes, stuffy ears, hearing loss, visual impairment, diplopia, drooping eyes, headache, facial numbness, and in severe cases, difficulty in swallowing. Whether it is rhinitis or nasopharyngeal cancer, it is important to keep the nasal cavity clean. If it is nasopharyngeal carcinoma, you should maintain an optimistic and relaxed attitude to face the disease, and actively take surgery and radiotherapy treatment, which can effectively control the disease. If it is rhinitis, it can be treated by some anti-inflammatory drugs. Meanwhile, we should pay attention in our daily life and stay away from some dusty, bacterial and viral environment, and it is recommended to bring a mask when we go out. If you have blood in your nose for half a year, there is a possibility of nasopharyngeal cancer, so you should go to the hospital for examination in time.