Hemolytic disease of the newborn will be divided into two major types, as follows: 1. ABO hemolysis, ABO hemolysis only occurs in the mother’s O blood type, if the mother is O blood type, its has the basis for the occurrence of ABO hemolysis, the father can be A blood type, B blood type and AB blood type; but whether its occurrence of hemolysis, the most fundamental reason is to see what kind of blood type the baby is, which type of blood type inherited from the father; if the baby is type A or type B blood, its together with mom’s type O blood, it is prone to ABO hemolysis; mom is type A blood, dad is type B blood, if the baby inherits dad’s type B blood and mom is type A blood, theoretically ABO hemolysis will also occur. 2, Rh hemolysis, first of all, it is clear that Rh blood type is usually referred to as panda blood, i.e. rare blood type; if mom is Rh negative blood, i.e. Panda blood mom, dad is Rh-positive, baby inherits dad’s Rh-positive blood blood blood type; baby is Rh-positive blood, mom Rh-negative, it is prone to Rh hemolysis, called neonatal hemolytic disease Rh hemolysis.