Rhinitis is a common otorhinolaryngological disease in children, which can be divided into acute rhinitis and chronic rhinitis. Chronic rhinitis in children is dominated by chronic simple rhinitis. Acute rhinitis, is an acute inflammatory manifestation of the nasal mucosa due to viral infection. The inflammation can spread to the sinuses or the throat, causing acute sinusitis, acute pharyngitis and other diseases with corresponding symptoms. Acute rhinitis, commonly known as cold or flu, is highly contagious. Common clinical symptoms include poor appetite, fever, blocked nasal passages, and difficulty in sleeping due to severe nasal congestion at night, resulting in breathing difficulties for children and crying and restlessness in young children. Sneezing may occur, 1-3 at a time; increased nasal discharge, from watery nasal discharge, progressing to mucous-purulent nasal discharge. If there are no complications, the symptoms usually subside automatically in 7-10 days. Chronic simple rhinitis is a chronic inflammatory disease with nasal blockage and nasal discharge lasting or recurrent for more than 4 weeks and 3 months, and without clear causative microbial infection. The main clinical manifestations are nasal blockage, mucus nasal discharge, and in children, chronic cough due to backflow of nasal discharge into the throat. Long-term irritation of nasal mucus can cause nasal vestibulitis and nasal vestibular eczema. People often refer to allergic rhinitis or chronic sinusitis in children collectively as rhinitis. When there is nasal congestion and nasal mucus, promptly visit otorhinolaryngology for clear diagnosis and treatment.