There is no best and fastest way to expectorate your child’s phlegm. Phlegm is an inflammatory response of the respiratory tract caused by infection. Treatment mainly includes controlling infection, diluting phlegm, and promoting phlegm discharge. 1. Control infection: If the increase in sputum is caused by respiratory tract infection, it is necessary to treat the pathogen. For example, antibiotics such as cefixime can be used for combined bacterial infections; azithromycin and erythromycin can be used for mycoplasma infections; and antiviral drugs such as oseltamivir can be used for influenza virus infections. 2. Dilute sputum: children with phlegm, cough reflex is not yet fully established, can be diluted through the sputum, to promote the discharge of sputum, you can use saline, aminobromine hydrochloride nebulization, or oral aminobromoterol oral solution, oral solution of pediatric lung fever cough and asthma, and other drugs, to promote sputum is more likely to be discharged out of the body. 3. Promote the expulsion of phlegm: you can pat the back of the child regularly, turn over, and avoid keeping a position for a long time. All of the above drugs should be used under the guidance of a doctor, avoid self-medication. Children with excessive phlegm expectoration, should be under the guidance of a doctor to take professional treatment or treatment.