The study enrolled 27 children with spastic cerebral palsy aged from 4 to 12 years old.These children were dived into two groups: traditional rehabilitation therapy (control group), and hospital based pediatric aquatic therapy program. We evaluate the motor performance, daily activity and social participation before and after the intervention and compared the difference in improvement between groups. The measurements include modified Ashworth score, Gross Motor Function Measure (GMFM -66), Vineland Adaptive Behavior Scale (VABS) , and Cerebral Palsy Quality of Life Questionnaire for Children (CPQOL).