[Abstract] Objective To explore the relativity of intelligence factor between the children with LD and the normal children.Methods To set up case group and a contrast group,the WISC-CR test was performed individually in the two groups.Results The relativity between LD and normal control was significant in all results.Conclusion The occurrence of prevention and cure on child LD need develop child’s intelligence and the speech expression and operation ability in good time need to notice an equilibrium development particularly and to pay attention to the child’s mental variety,then to give exactitude to appease in time with intervention.