Children with fever and purple lips, fever suggests the possibility of infection, and purple lips suggest that the child has a lack of oxygen, so the main consideration is a serious pneumonia and myocarditis. 1. Pneumonia: when a child has a serious lung infection, in addition to fever and other symptoms, it will also affect its respiratory function, so that the oxygen content of the lungs into the blood decreases, the whole body appears to be insufficient oxygen supply, thus showing fever and purple lips. 2. Myocarditis: when the child myocardial infection, it will affect the normal pumping function of the myocardium, so that the heart pumping decreased, resulting in the whole body blood supply oxygen deficiency, fever and purple lips. Children with fever and purple lips, there may be other reasons, such as fever and chills caused by capillary constriction, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.