The first thing to do for a 1-year-old child with a cough and phlegm is to go to the hospital and have the doctor auscultate the lungs to see if bronchitis or pneumonia is present. If there is bronchitis or pneumonia, hospitalization is necessary. You can also take oral anti-inflammatory drugs, cefuroxime or amoxicillin granules, roxithromycin, etc., but also to take phlegm drugs, such as aminoglutethimide, compound fresh bamboo leech liquid or monkey jujube powder, etc., with nebulizer treatment will be more effective, the inflammation is controlled before the symptoms can be relieved. In the meantime, give your child plenty of water, which can help to dilute the phlegm. Pat your child’s back gently, up and down, left and right, especially the shoulder blades, where phlegm tends to collect. Make sure the air in the house is humid, with 60-65% humidity, either by placing a humidifier or a few pots of water.