Nasal congestion and sneezing in newborns can be seen in physiological phenomena, pathological conditions (such as respiratory infections), whether “cold” need to be specifically analyzed, such as occasional nasal congestion and sneezing in babies, and no other discomforts, usually normal, not a “cold”. 1. Physiological phenomenon: For newborns, the nasal mucosa is fragile and the nasal cavity is narrow, which is easily affected by external factors (e.g. low temperature) and other influences, and the phenomenon of nasal congestion and sneezing may occur. Usually, the symptoms are mild, and the baby’s mental response is good and there are no obvious abnormal symptoms (e.g. fever, etc.), which is a normal physiological phenomenon, and it is not a “cold”. 2. Respiratory tract infection: it is commonly believed that “cold” refers to acute upper respiratory tract infection, for newborns due to the young, weak respiratory barrier, respiratory infections can easily involve the upper and lower respiratory tract at the same time, nasal congestion, sneezing, fever, moaning or foaming and other symptoms, and some of them may have difficulty breathing and other symptoms. It is recommended to consult a specialist for a comprehensive assessment and judgment.