More than a month of the baby appeared mild cough should not be particularly big problem, but need to consider the child has no respiratory tract infection, after all, the child’s age is a little small, physical condition is relatively poor, resistance is relatively poor, if there is a cold, it is easy to respiratory tract infection, inflammation stimulation, there will be a cough. You need to pay attention to whether the child has a stuffy nose, runny nose, whether the body temperature is within the normal range, whether breastfeeding is affected, whether there is a bluish color around the mouth, whether there is an increase in respiration, which are some of the main manifestations of respiratory tract infections. If the above symptoms are combined, it is necessary to go to the hospital for examination, chest X-ray and blood test. If the above symptoms are not present, you can observe for the time being. In addition, the child’s age is relatively young, and choking may occur when swallowing saliva, which is also related to the poor coordination of the child’s epiglottis.