Pediatric allergic rhinitis usually develops due to exposure to allergens, and the main symptoms are clear watery nose, nasal itching, nasal congestion and sneezing, which may be accompanied by itchy eyes and no fever. In contrast, the main symptoms of common cold are running nasal discharge in the early stage and pus-yellow nasal discharge in the later stage, which may be accompanied by fever and general discomfort, and the onset of the disease usually lasts for 7-10 days.