The following measures can be used to relieve phlegm in one-year-old children: Firstly, children can be given oral aminoglutethimide, which can have a good effect on phlegm and cough, and the taste of the drug will be good and acceptable to most children. Secondly, children can be given Ambroxol oral solution, which can effectively dilute phlegm and allow children’s phlegm to be expelled better. Again, children can be treated with Er Chen Tang, which mainly consists of ingredients such as Semen, Fu Ling and Chen Pi, which can dry dampness and dissolve phlegm. Finally, children can be relieved by nebulized inhalation, which mainly includes budesonide, terbutaline and other drugs.