If the five-month-old baby cough, phlegm, quick solutions are as follows: First, you can give the baby nebulized inhalation therapy, nebulized inhalation of drugs can be directly on the throat, airway parts, can effectively play the role of phlegm, help the absorption of phlegm. Second, if the child cough, phlegm symptoms are more serious, you can also choose to go to the hospital for intravenous infusion of phlegm cough medication for treatment, commonly used oral solution of Ambroxol, at the same time can be caused by pediatric cough, cough phlegm pathogenic bacteria for treatment, if it is caused by viruses, given ribavirin injection for treatment, such as bacteria, can be given to cephalosporin or penicillin antibiotics for treatment. Third, the child can be given with oral phlegm cough medication, can be taken orally Ambroxol oral solution, ambroxterol oral solution or lung force cough combination and so on.