Children coughing yellow sputum, mostly belong to the wind-heat cold caused by cough. You can take the medicine to clear away heat and remove toxins, and the medicine to relieve cough and resolve phlegm can be taken orally with Ambroxol oral solution. You can check the blood routine, through the blood analysis, if it is a viral infection caused by cough, you can use antiviral drugs symptomatic treatment. If the cough is caused by bacterial infection, antibiotic drugs can be used to treat the symptoms, such as penicillin, cephalosporin, macrolides. Expectorant drugs such as bromhexine hydrochloride and aminoglutethimide hydrochloride can also be given to treat the symptoms. Children need to drink more water when coughing, which is conducive to the dilution of phlegm and can promote the discharge of phlegm.