When children can’t spit up, they may block the throat with phlegm and cause uncomfortable situation, specific treatment methods are as follows: First, parents can give children appropriate and diligent feeding and drinking more water, which can ensure the moist state of the throat and is also conducive to the increase of moisture in the respiratory tract, this situation can make the phlegm dilute and is conducive to the wetting and absorption of phlegm. Second, nebulized inhalation treatment can be given. When nebulized inhalation is given, the drug can directly act on the throat and airway, which is conducive to the wetting of phlegm and the discharge and absorption of phlegm, and the phlegm can be discharged by swallowing and coughing, and when the child does not spit up, the child will also discharge from the gastrointestinal tract by swallowing. Third, the symptomatic application of phlegm-suppressing and cough-suppressing medication can quickly relieve the symptoms of excessive phlegm.