Three-month-old babies’ own body resistance is relatively poor, so it is easy to cause coughing, and the main causes of coughing are colds, cold air stimulation, odor stimulation, gastroesophageal reflux and other reasons. Three-month-old babies with coughs need to take timely measures to control the symptoms to avoid more serious, thus affecting the healthy development of the body. Three-month-old babies who develop a cough are most often suffering from colds. Children who are fed milk can be allowed to drink some water so that the sticky secretions in their throats can be diluted. The indoor air should be circulated to keep fresh and keep the humidity in the room not dry, which will help the recovery of cough; if it has not improved, you can take some medication under the guidance of the doctor. If the cough is accompanied by fever, phlegm, poor milk intake, poor spirit, or accompanied by diarrhea, dyspnea, nasal fluttering, purple lips, wheezing, etc., it is recommended to consult a doctor immediately. Pay attention to the living environment is strictly prohibited smoking, smoke will stimulate the respiratory tract caused by coughing, but also to pay attention to stay away from other irritating odors; flower demon attention to gastroesophageal reflux may be, sleep is the use of the head and chest a little higher, to prevent reflux. Usually let the baby to accept the temperature change exercise, often take the baby for outdoor activities, but pay attention to the baby to prevent cold and keep warm.