A 4-month-old girl had a cold with cough and phlegm. Today, her coughing was particularly severe, and she couldn’t swallow or vomit the phlegm, causing her to feel uncomfortable with a sore throat and vomiting after coughing. Inquired about methods to prevent choking while sleeping. It is recommended to administer symptomatic anti-inflammatory medication and cool blood medicine, and to drink plenty of water, avoid spicy food, and the situation should improve in a few days.