More than 2 months of occasional cough, no other clinical symptoms to consider the following possibilities: 1, pay attention to whether it is caused by choking, such as the baby to eat the milk is more anxious, if it is milk feeding, the pacifier is too large may lead to the baby choking and cause coughing. 2, pay attention to whether there is a gastroesophageal reflux cough, because more than 2 months of babies pancreatic dysfunction, pylorus development, stomach capacity is less 3, if frequent episodes of coughing should also pay attention to the existence of allergic factors, such as the baby’s environment there are easy to allergic substances, such as mites, dust, such as the baby’s allergy to milk proteins can lead to occasional coughing. 4, if occasional coughing is accompanied by other clinical symptoms, such as fever, gastrointestinal symptoms, etc., you also need to pay attention to exclude infectious factors, such as respiratory tract Viral infections, bacterial infections, etc.