Children's colds, also known as acute upper respiratory infections, are acute inflammations of the upper respiratory tract caused by various pathogens. The primary symptoms of a child's cold are systemic symptoms, including fever, headache, general discomfort, and lack of energy. Some children may also experience a lack of appetite, abdominal pain, diarrhea, vomiting, and other gastrointestinal symptoms, and even some children may have episodic pain around the navel without tenderness, possibly due to intestinal spasms caused by the cold. If there is persistent abdominal pain, it is necessary to consider whether the child has developed acute mesenteric lymphadenitis. Additionally, there are local symptoms, mainly characterized by nasal congestion, runny nose, sneezing, and cough, which is mostly dry. There is also throat discomfort and sore throat.