A clinical trial was conducted to assess the impact dynamic surface exercise training on gross motor and trunk control of children with spastic diplegic cerebral palsy. The trial enrolled 38 children with spastic diplegic cerebral palsy of GMFCS levels 3 and 4. Children were randomly assigned to either the DSET or conventional physiotherapy training groups. Both groups underwent 60-minute vigorous exercise program four days a week for two months. The trunk control measurement scale was used to assess trunk control, while the GMFM-88 was used to assess gross motor function. Trunk control and gross motor function scores were obtained at the beginning, the fourth week, and the eighth week.