If you suspect that your child has rhinitis, you should go to the ENT department of the hospital to confirm the diagnosis through clinical symptoms, physical examination, nasal endoscopy, serologic examination, imaging examination, and measurement of nasal ventilation function under the guidance of the doctor. 1. Clinical symptoms: If the child has repeated sneezing, runny nose, nasal congestion, nose picking or nose rubbing, it may be rhinitis. In severe cases, there may also be repeated nosebleeds, open-mouth breathing, headaches, repeated coughing, throat clearing and other symptoms. 2. Physical examination: Physical examination means that the physician will observe the nose and related parts of the respiratory tract to understand the lesions and check whether there is congestion, edema, abnormal secretion and other conditions. 3. Nasal endoscopy: Nasal endoscopy is mainly to observe the structure of the nose and nasal mucosa, suitable for patients with atypical symptoms of rhinitis. 4. Serologic examination: serologic examination is mainly to distinguish allergic rhinitis and non-allergic rhinitis. 5. Imaging examination: Imaging examination can be used to diagnose rhinitis, mainly refers to CT of the nose and X-ray of the sinuses. 6. Nasal Ventilation Function Measurement: Nasal Ventilation Function Measurement evaluates the specifics of nasal ventilation, which is of significance in the diagnosis and treatment of the disease. Whether it is an adult or a child, the diagnosis of rhinitis needs to be analyzed by an ENT doctor with a combination of tests. Once the diagnosis of rhinitis is confirmed, you should actively cooperate with your doctor for proper treatment.