If children have phlegm sound in their throat when they sleep at night, it is most likely due to eating too salty or spicy food at night, which leads to mucous membrane congestion. Sometimes it is because the mucous membrane inside the red is congested and inflamed after the child has a cold, which leads to the formation of phlegm. It is recommended that parents should pay attention to the moisturizing of the air environment and let the child take anti-inflammatory drugs, and try to treat with Chinese medicines, such as Pudilan Anti-inflammatory Oral Liquid, Shuanghuanglian Oral Liquid, etc. If the child’s phlegm sound still does not improve after 2-4 days of treatment, then add antibiotics appropriately, commonly used is Cefaclor granules or Cefdinir dispersible tablets, within a week the inflammation will subside and the child’s phlegm sound in the throat will be cured.