There are more factors for blood in the nose. The first one is that the mucous membrane of the nasal cavity may be eroded and bleeding, so there is blood inside the patient’s nose; the second one is inflammation if the patient wakes up in the morning and inhales the nose back hard for the first time, and there is blood in the nose in this situation, and the third one is to consider whether there is any malignant tumor in the nasopharynx, and the patient can go to the hospital to do a nasopharyngoscopy, so then they will find out whether the situation in the nasopharynx is The patient can go to the hospital for a nasopharyngoscopy to find out whether the nasopharynx is inflammatory or tumor.