Abstract: ObjectiveTo study the intelligence development among preschool children.MethodsThree hundred and forty two preschool children in three kindergartens were tested by C2WYCSI.ResultsThe distribution of VIQ、PIQ、FIQ were all departured to right.VIQ was lower than PIQ and with significance(t=-19.325,P=0.000).The disassociation rate between VIQ and PIQ was 43.9%,and among them the rate of VIQ>PIQ was 97.3%.The disassociation rates between VIQ and PIQ became lower with the FIQ grading increase.The scatter scores among those factorials that made up of VIQ、PIQ、FIQ were lower with the FIQ becoming higher and with the significance(P<0.05).ConclusionThe disassociation of VIQ and PIQ among preschool children should be paid attention,and much more study should be taken to explore the influence of IQ's structure among of them.