When children catch a cold, they may exhibit symptoms such as fever, runny nose, nasal congestion, cough, sore throat, headache, abdominal pain, vomiting, and diarrhea. If a child's nasal congestion is severe and the nose is blocked, we can apply a warm towel to the root of the nose for a hot compress, or gently remove the nasal secretions using a small cotton swab. It is also possible to apply some nasal ointment at the vestibule of the nose to improve air passage. At the same time, it is advised to administer cold medicine for symptomatic treatment.