Symptoms of novel coronavirus pneumonia in young children include typical and atypical symptoms, with typical symptoms manifesting as fever, cough, and wheezing. Atypical symptoms include malaise, nasal congestion, runny nose, sore throat, abnormal sense of smell and taste, as well as gastrointestinal symptoms such as diarrhea and vomiting. There are different types of novel coronavirus pneumonia in young children, and the associated symptoms can vary greatly, and are generally classified as asymptomatic, mild, common, and severe. 1. Asymptomatic: Asymptomatic generally refers to the absence of any self-perceived or clinically recognized symptoms after 14 days of isolation and observation, and usually these patients are at risk of transmission and therefore should be monitored more closely. 2. Common and mild: Common usually manifests as fever, cough, nasal congestion, runny nose, sore throat, diarrhea, vomiting, etc. The light type usually presents with symptoms such as malaise, mild fever, abnormal smell and taste disorders; 3. Heavy type: young children with fever are sharply aggravated with cough, wheezing, suffocation, and then serious complications such as systemic sepsis. Early detection is very important for lightly affected children, and a detailed history of epidemiological exposure in young children is required. If there is a history of epidemiological exposure, it is important to perform relevant tests such as nucleic acid and blood sampling at an early stage. Perform early clinical diagnosis and do not rely solely on clinical symptoms, as mild and atypical cases are not symptomatically distinguishable from the common cold. In young children with typical or severe novel coronavirus pneumonia, the corresponding symptoms appear more rapidly and are easily detected, and may be followed by fever followed by gradual onset of respiratory distress, hypoxemia, and even serious complications such as metabolic acidosis, acute respiratory distress syndrome, and multi-organ failure.