The improvement of bronchitis in infants is indicated by the return of normal body temperature and the gradual reduction of symptoms such as excessive sputum, cough, fever and headache. When infants suffer from bronchitis, they will have cough and phlegm in the early stage, and with the aggravation of the disease, fever, headache, fatigue, depression, vomiting, diarrhea and other symptoms may appear. After reasonable treatment, the above clinical symptoms will gradually reduce, such as body temperature will return to normal, cough, phlegm, headache, fatigue, vomiting and diarrhea will gradually reduce or even disappear, through the clinical symptoms can not be completely determine whether the clinical symptoms are reduced, but also need to carry out the corresponding examination, such as blood routine. Only through the observation of clinical symptoms and the corresponding examination, can we fully determine whether the infant bronchitis has been improved, parents should not judge on their own.