Ulceration on the inner wall of nose is not necessarily nasal cancer. There are many causes of ulceration on the inner wall of nose, which may be caused by nasal cancer, or may be due to inflammatory infection or local ulceration, all of which have great impact on the body. Therefore, when patients find this symptom, it is better not to delay the condition and they should go to ENT department of hospital as soon as possible. The symptoms of nasal lining ulceration can be seen in diseases such as nasal vestibulitis, nasal vestibular eczema and nasal septal mucosa ulceration. Patients can scratch and pick the nasal cavity continuously due to nasal vestibular pain and nasal itch, which aggravate the nasal lining ulceration and should be treated with antibacterial and anti-inflammatory drugs in time to control the development of the disease. In addition, the possibility of malignant tumor in nasal cavity should be considered. Nasal cancer can also cause the symptom of nasal wall ulceration, which should be given enough attention, timely surgery and active follow-up treatment to avoid metastasis and recurrence, otherwise it will cause serious health hazards. In conclusion, there are many causes of nasal lining ulcers, which may be caused by inflammatory infection or cancer, and cannot be treated blindly. Patients should go to the hospital for examination after their own symptoms appear, and then control the disease as soon as possible according to the examination results, so as to reduce the impact of the disease on the body.