Children's cold, also known as acute upper respiratory tract infection in children, is the most common disease among children. It mainly refers to the inflammation of the mucous membranes of the nose, nasopharynx, and pharynx, leading to acute rhinitis, acute pharyngitis, and acute tonsillitis, collectively referred to as such. After catching a cold, children can exhibit local symptoms, primarily manifesting as nasal congestion, sneezing, runny nose, mild cough, discomfort in the throat, or sore throat. Systemic symptoms may include fever, fatigue, headache, body aches, loss of appetite, nausea, vomiting, diarrhea, and abdominal pain, which often appears as spasmodic periumbilical pain without tenderness. In infants and young children, local symptoms are not severe, but systemic symptoms are more significant. A general physical examination can reveal congestion in the throat, swelling of the tonsils, and enlargement of the lymph nodes in the jaw and neck area.