Infant sneezing and coughing may be a cold or allergic rhinitis or pneumonia. 1. Colds: Colds are caused by viral infections, which can be characterized by nasal congestion, sneezing, runny nose, coughing, or fever, and infants also have symptoms such as low milk intake and poor mental health. Therefore, if a baby sneezes and coughs, it may also be a cold. 2. Allergic rhinitis: usually caused by contact with allergens (e.g. cold air, dust, pollen, etc.), manifested as sneezing, coughing, also accompanied by nasal congestion, runny nose and other symptoms. Symptoms can be relieved after removing allergens. 3. Pneumonia: In some infants, the manifestation of the disease is usually atypical. Some pneumonia may only manifest as sneezing and coughing, but it may also be accompanied by poor spirit, reduced milk intake, or fever. Therefore, infants with sneezing and runny nose should actively seek medical attention, and after the doctor’s evaluation to clarify the cause of the disease, reasonable treatment, so as to avoid delaying the disease.