7-year-old children’s nose at night to identify the causes, may be physiological, may also be pathological; physiological causes need to adjust the lifestyle, pathologically caused by the need for targeted treatment under the guidance of a doctor, such as drug therapy. 1. Physiological: children sleep in a dry environment air, causing a decrease in nasal mucus secretion, resulting in nasal mucosa congestion and swelling, secretion accumulation blockage of the nasal cavity, easy to cause the feeling of sleeping nose. It is recommended to keep the indoor clean, quiet and appropriate temperature and humidity, and use a humidifier if necessary. 2. Pathological: common diseases that cause the nose at night are allergic rhinitis and other nasal inflammation, which can lead to congestion and swelling of the nasal mucosa, thus causing the nose to sleep. You should remove the suspected allergens from your child’s bedroom, and apply antihistamines (such as loratadine) and nasal glucocorticosteroids (such as budesonide nasal spray) as prescribed by your doctor if necessary. The 7-year-old child’s nose at night may also be caused by other factors. Parents are advised to bring their children to the doctor for a clear diagnosis of the cause of the problem and to give them targeted treatment, rather than blindly self-medication. All of the above medications should be used under the guidance of a doctor.