reported that children with CP have predominance of primitive, spinally controlled muscle responses patterns over more centrally integrated and coordinated movement patterns that is due to poor myelination of the descending cerebral and brain stem neurons and also reduction in both number and connection of the neurons in the higher nervous centers as motor cortex, basal ganglia, cerebellum and brain stem. The purpose of this study was to compare between the effect of whole body vibration and suspension therapy via using spider cage on balance in children with hemiparetic cerebral palsy. Conducting the study on children aged from 8 to 10 years may be attributed to the fact that, patients with CP between 7 and 14 years show defect in agility and balance tasks