Children cough, runny nose most suggest the existence of respiratory tract infection, if the degree of cough is not very heavy and not very deep, most suggest the existence of upper respiratory tract. Upper respiratory tract infections are mainly viral infections, self-limiting, no special drugs, symptomatic treatment can be. Generally you can give the baby with a hot towel on the root of the bridge of the nose, you can also use physiological seawater to rinse the nasal cavity, can help reduce nasal congestion, reduce secretions. If the cough is not very serious and does not affect sleep and daily activities, no special treatment is needed. If the cough has phlegm, you can add medication to thin the phlegm, such as Ambroxol Oral Liquid. In addition, drinking plenty of water and keeping the indoor environment moist will help moisten the airways and reduce coughing, and most upper respiratory tract infections can be self-healed in 7-10 days. Most upper respiratory tract infections resolve spontaneously in 7-10 days. If the cough is deeper and heavier, most of them progress to the lower respiratory tract, where most of the lower respiratory tract infections are combined with bacterial infections, and need anti-inflammatory medication.