Most of the runny nose and nasal congestion in babies are due to colds, which is commonly known as upper respiratory tract infections. If your baby is in good spirits, does not affect feeding or sleeping, and does not have a fever, you can observe and see for yourself, and take some medicine such as Ai Chang to relieve the symptoms, usually mild ones will heal on their own in a week or so. However, if your baby has high fever, cough, poor spirit, sometimes vomiting, diarrhea, irritability, and sometimes cramps, you should go to the hospital immediately. Some children have pain around the umbilicus at the beginning of the illness, so when you go to the hospital, you can usually find congestion in the pharynx, swelling of the tonsils, and sometimes swelling of the lymph nodes. In general, 8-month-old babies sometimes have special types of upper respiratory infections, such as herpes pharyngitis and pharyngeal conjunctival fever. It is important to prevent complications that occur, such as otitis media, sinusitis, laryngitis or pneumonia.