Rhinitis and sinusitis are different in terms of the location of onset, the character of secretion and the main common symptoms, which can be judged by nasal endoscopy, sinus CT and other examinations. 1. Location: The location of rhinitis is mainly in the mucous membrane of the nose, while the location of sinusitis is mainly in the mucous membrane of the sinuses. 2. Symptoms of secretion: The secretion produced by patients with rhinitis is usually mucous or watery nasal mucus, while the secretion produced by patients with sinusitis is usually purulent nasal mucus. 3. Main common symptoms: rhinitis symptoms in addition to nasal congestion can also be manifested as sneezing, nasal itching and other symptoms, while the symptoms of sinusitis in addition to nasal congestion is also manifested in the head, facial pain, loss of smell and other symptoms. It is recommended that patients go to the hospital for a systematic examination in a timely manner, after a clear diagnosis, follow the doctor’s instructions to standardize the treatment.