Neonatal cyanosis, also known as cyanosis or cyanosis, is a common symptom of neonatal disease. Unlike adult cyanosis, for infants within four weeks of birth, the discovery of cyanosis in newborns should be brought to immediate attention for prompt consultation and treatment to avoid worsening of the condition. For neonatal cyanosis, oxygen enrichment treatment should be given promptly. Cyanosis indicates a lack of oxygen in the body, which may cause damage to the brain, heart, kidneys, lungs and other important organs of newborns, thus affecting their intellectual and physical development. How to diagnose neonatal cyanosis? 1. Neonates show cyanosis only at lower PaO2 than adults, because neonates have higher fetal hemoglobin in their blood, which has higher affinity with oxygen. 2, neonatal hemoglobin concentration varies widely, both from various causes of anemia and erythrocytosis. Cyanosis occurs when the red blood cells increase and the reduced hemoglobin reaches a high level; in severe anemia, cyanosis can be seen when the oxygenated hemoglobin drops to a very low level. If a newborn baby has cyanosis, parents must pay attention to it and first determine for themselves which kind of cyanosis it is, and if they cannot, go directly to the hospital.