When a child catches a cold due to the invasion of pathogens, it can cause symptoms such as fever, runny nose, nasal congestion, cough, sore throat, headache, abdominal pain, bloating, vomiting, diarrhea, etc. Some children may experience severe nasal congestion, especially at night during sleep, which can lead to snoring and mouth breathing. At this time, we recommend using a warm towel to apply heat to the root of the child's nose, which can improve the child's nasal airway ventilation. Adjusting the child's sleeping position to lie on one side instead of on the back can also help relieve nasal congestion. Of course, if the child indeed has a cold, giving appropriate cold medicine during the day can provide symptomatic relief, which makes it easier to alleviate nasal congestion.