Objective: To learn correlation and linear relation between Perceptual Quotient (PQ) and Intelligence Quotient (IQ) by evaluating visual perception and IQ of the children with cerebral palsy and normal children, to compare the difference of the subject groups, and to use it as the preliminary study on the correlation between the visual perception and the IQ. Method: The assessment for the visual perception has been performed by Motor Free Visual Perception Test-revised (MVPT-R) twice and for the IQ by Leiter International Performance Scale (LIPS). Subjects have been 11 children with the cerebral palsy and 9 normal children, at the age of between 5 and 11. Results: Regarding the scores of the MVPT-R and the IQ of LIPS, the normal children’s scores have been higher than the one with the cerebral palsy, with meaningful statistics. There has been very high correlation between mental age and perceptual age, the IQ and the PQ, and the IQ has increased as the PQ has increased. When it comes to linear regression, the cerebral palsy has fit 65.9% while the other with the normal children has fit just 34.2%. Conclusions: There is a possibility of predicting the PQ and the IQ owing to the high correlation and the linear relation showed between the PQ and the IQ. There is a need for the activated study on the linear relation collecting the data about enough subjects through further research.