Abstract: ObjectiveTo know maternal-transferred measles antibody level of different month old infants in order to sutdy the countermeasures of measles control on infants.MethodsTo test meales IgG antibody level of infants'blood by using EL ISA method.ResultsMeasles antibody level of newborn is nothigh and it reduces to 50% in 3 months old,20% in 6 months old, 15% in 8 months old and the antibody in 6 and 8 months old is in lower level,nearly no protection for infants.Meanwhile it's found that successful rates of immunization and antibody distribuiton of measles have no difference between 6 and 8 months old babies after vaccination of measles vaccine.ConclusionMeasles antibody level is low in most newbrons.In order to reduce infants measles cases,it should be considered that the age of the first vaccination of measles vaccine are changed from 8 months old to 6 months old in some regions.