There are many causes of nasal congestion in children’s noses at night, such as colds, upper respiratory tract infections, rhinitis, and so on, and the choice of treatment is based on different causes. 1. Colds: may be due to colds caused by nasal congestion, you can use a warm towel on the nose for hot compresses to speed up the circulation of blood around the nose, can effectively improve the nasal congestion, you can also use saline in the nasal cavity a drop of wet, can relieve nasal congestion. 2. Upper respiratory tract infection: mainly caused by viruses and bacteria, manifested as sneezing, nasal congestion, sore throat, cough and other symptoms, usually pay attention to rest, drink more water, keep the indoor air circulation, etc., can effectively relieve the symptoms. If necessary, consult a doctor, such as the combination of bacterial infection can use antibacterial drugs (such as cefixime, etc.). 3. Rhinitis: due to viruses, bacteria, allergens, etc., causing inflammation of the nasal cavity, manifested as runny nose, nasal congestion, nasal itching and other symptoms, it is recommended to stay away from allergens, clean the environment, and eat more fresh vegetables, fruits, meat, fish, etc., to improve immunity, you can use medications under the guidance of a doctor, such as budesonide nasal spray, cetirizine drops, etc., which can be effective in relieving symptoms. If the symptoms are not relieved, it is recommended to go to the hospital for examination and treatment.