Bleeding from nasal mucosa and bleeding caused by nasal cancer have different bleeding volume, different paths of nasal blood discharge, and differences in hemostatic effect and disease development process after bleeding. 1. Bleeding volume: Bleeding from nasal mucosa is usually in small amount, and it is discharged from the nasal cavity drop by drop, or it may be blood in nasal mucus. Bleeding caused by cancer is small in the early stage, but may be larger in the late stage. 2. Discharge path: Nasal mucous membrane bleeding is usually discharged from the front nostril of the nasal cavity, while nasal cancer may appear to suck back snot blood and discharge it from the back nostril. 3. Hemostatic effect after bleeding: bleeding from nasal mucosa can be easily stopped after bleeding, while bleeding from nasal cancer can be repeated for many times, and the hemostatic effect after bleeding is not good. 4. Disease development: Nasal mucous membrane bleeding may be cured with the development of the disease, while bleeding caused by cancer may increase with the development of the disease, and may even invade large blood vessels and bleed fatally. It is suggested that patients should seek medical treatment in time, diagnose the disease under the guidance of doctors and actively cooperate with physicians for treatment.