For a two-year-old baby with cough and phlegm, the following treatment measures can be taken: 1. Oral cough and phlegm-relieving medications: such as Pediatric Pulmonary Fever Cough and Asthma Oral Liquid, Pediatric Anti-cough Oral Liquid, Ertanzine, Aminobroxol Oral Liquid, etc. 2. Nebulizer inhalation: Budesonide, terbutaline, plus N-acetylcysteine for nebulizer inhalation treatment, which has the effect of dissolving phlegm. Parents should be reminded that if their child has a long and severe cough and the above treatment does not work well, look for the cause of the cough, whether it is due to bronchitis, bronchopneumonia caused by infection or other causes of cough, such as allergic cough, cough variant asthma, etc. If necessary, have your child’s blood tests, mycoplasma antibodies, lung CT and other related tests, and treat according to the results.