Nasal bleeding after nasopharyngeal cancer treatment is mainly considered to be caused by recurrence of the disease, or other nasal diseases and trauma. It is recommended to go to the hospital for consultation in time and carry out targeted treatment under the guidance of doctor. 1. Recurrence: nasopharyngeal cancer belongs to malignant tumors, if there is recurrence after cure, it may cause nose bleeding, which is mainly manifested as blood in nasal mucus, and may be accompanied by nasal congestion, tinnitus and other symptoms. It is mainly due to the rapid growth of tumor, which destroys the surrounding blood vessels; 2. Nasal diseases: if patients with cured nasopharyngeal cancer suffer from other nasal diseases at the same time, such as rhinitis, sinusitis, etc., nose bleeding may also occur. For patients suffering from rhinitis, due to local inflammation caused by bacteria and viruses, long-term stimulation of nasal mucosa may lead to damage of mucosa or rupture of local blood vessels, which may lead to nose bleeding after nasopharyngeal cancer cure; 3. Trauma: If patients with cured nasopharyngeal cancer have suffered trauma to the nose or damage the mucous membrane of nasal cavity when digging the nose, nose bleeding may also occur. At this time, there is usually no need to be nervous and it can recover by itself. If nose bleeding is found after nasopharyngeal cancer is cured, it is recommended to go to hospital for examination in time to exclude recurrence and further check whether there are other diseases.