The causes of cough in one-year-old children are mostly caused by environmental stimuli, colds and allergic coughs, which need to be treated according to the causes, including the use of antibiotics, glucocorticoids and acid-suppressing drugs. 1. Environmental stimulation: the infant respiratory system is not well developed, if the air in the environment is poor, or a long time of cold air stimulation, can cause infants to cough performance. It is recommended to improve the living environment, often open the window to ventilate. 2. Colds: If the cough occurs after a cold, it is often considered a cold, usually combined with nasal congestion, runny nose and other manifestations. Viral infections can be treated symptomatically, but if there is a bacterial infection, antibiotics should be used, such as cefixime, etc. Meanwhile, rest should be paid attention to and nutrition should be supplemented in time. 3. Allergic cough: Cough can be the only manifestation, mostly related to genetic factors. The child should first keep away from allergens, in addition to the use of cetirizine hydrochloride drops and other drugs to relieve the symptoms of coughing as prescribed by the doctor. In addition, there are also gastroesophageal reflux and other reasons can cause the child coughing symptoms, a year-old child cough should be timely to the hospital, a clear diagnosis in the doctor’s guidance for treatment. All of the above medications should be used under the guidance of a doctor.