Baby sleep nasal congestion may be caused by abnormal sleep environment, cold, rhinitis, adenoid hypertrophy, it is recommended to go to the hospital for examination, to be identified after the cause of the corresponding treatment. I. External factors: dry indoor air, lack of air circulation, low room temperature, coupled with the physiological anatomical characteristics of the baby’s narrow nasal cavity, easily cause nasal congestion in sleep. It is recommended to improve the sleep environment, proper ventilation in the room, add plants, and use a humidifier if possible. Second, disease factors: 1, cold: mostly manifested as nasal congestion, runny nose, sneezing, dry cough, throat discomfort and other symptoms, can be caused by improper care, climate change and poor environment. In mild cases, general treatment is the main focus, pay attention to rest, drink more water and supplement a lot of vitamin C. If the symptoms do not ease and have a tendency to worsen, you need to follow medical advice for anti-infection treatment, such as viral infection can be applied ribavirin treatment; 2, rhinitis: such as pediatric acute rhinitis, allergic rhinitis, both of which can affect nasal breathing, resulting in nasal congestion when the baby sleeps. Pediatric acute rhinitis to support and symptomatic treatment, available saline nasal wash; allergic rhinitis to avoid allergens and irritants, while antihistamines can be used, such as desloratadine; 3, adenoid hypertrophy: if a short period of time, the baby sleep nasal congestion symptoms are light, and no obvious symptoms of sleep apnea, you can follow medical advice to apply nasal spray or nebulized inhaler; if the symptoms are heavy, nasal blockage, Open-mouth breathing, sleep snoring symptoms, serious cases can appear apnea, if necessary, surgical treatment is required; 4, other: if the baby nasopharynx exists nasal foreign body, may also appear sleep nasal congestion, need timely microscopy, remove foreign bodies, symptoms can be relieved.