7 months baby nasal congestion cough in the early morning may be related to physiological factors, but also may be related to allergic rhinitis or acute upper respiratory tract infection and other factors, the specific analysis is as follows: 1. physiological factors: the baby’s respiratory development is not perfect, the airway response will be higher, the early morning by the external stimuli, there will be a dry cough and nasal congestion. 2. Allergic rhinitis: 7-month-old babies with nasal congestion and cough in the early hours of the morning may be related to allergic rhinitis, and will be accompanied by sneezing, runny nose and other adverse reactions, may recur throughout the year. 3. acute upper respiratory tract infection: baby if only occasionally appear above symptoms, may be due to a recent cold leading to upper respiratory tract infection related. 7 months baby nasal congestion wee cough there may be other reasons, it is recommended to go to the hospital in a timely manner to carry out relevant examinations, to clarify the cause of the disease after active symptomatic treatment.