Children coughing for a long time, commonly due to infectious diseases, allergic diseases, etc., to treat the need to identify the causes, targeted treatment, including general treatment, drug therapy. Children coughing for a long time is often seen in infectious diseases, such as mycoplasma infection, need to cooperate with azithromycin according to the course of regular medication. If the allergy is triggered by factors, it is necessary to timely cooperate with anti-allergy drugs (such as cetirizine hydrochloride) as well as to do allergen testing to avoid contact with allergic substances in order to remove the root cause of allergic cough. In addition, severe cough should be combined with cough suppressant and phlegm removing drugs, such as Ambroxol oral solution. Usually pay attention to keep warm, light diet, drink more water, moderate exercise, etc., children cough more causes (such as cough variant asthma, etc.), it is recommended to consult a doctor in a timely manner, not self-medication. All of the above medicines should be taken under the guidance of a doctor.