If a child has a fever and purple lips, the main considerations are myocarditis and severe pneumonia, as follows: 1, myocarditis: children infected with enteroviruses, especially coxsackie virus, can easily occur after viral myocarditis, viral myocarditis occurs, causing damage to the heart muscle cells, resulting in a decrease in the heart’s ability to pump blood, causing hypoxia. After hypoxia occurs, there will be purple lips, chest tightness, weakness and other symptoms; 2. Severe pneumonia: after the occurrence of severe pneumonia will also cause fever, purple lips, and often accompanied by breathing difficulties and other symptoms.