Mild sieve sinusitis belongs to a kind of sinusitis, mostly refers to acute and chronic inflammation of the sieve sinuses with smaller lesions and milder symptoms. It is often characterized by mild nasal congestion and runny nose on the affected side, and there may be loss of smell, with or without headache, loss of appetite, irritability, depression and other systemic symptoms. In some cases, mild sieve sinusitis has no obvious symptoms, and only mucosal thickening is found on sinus CT examination. The disease is often caused by infection, allergy, trauma or surgery, and is related to genetic or acquired factors, and the etiology may be multifactorial for most patients. It is recommended to visit the appropriate department in the hospital in time and standardize the treatment after the doctor has made a clear diagnosis. In weekdays, we should avoid colds, pay attention to eat less spicy, cold food, avoid smoking, avoid alcohol.