Repetitive transcranial magnetic stimulation (rTMS) is a noninvasive treatment tool for the recovery of cerebral palsy (CP). This report describes the modulation effect of rTMS to functional connectivity, functional network connectivity, motor, and cognitive ability following treatment in a child with mild ataxia CP. After receiving 8 months of 0.5 Hz rTMS treatment over the right dorsolateral prefrontal cortex, the child showed a gradual improvement in motor and cognitive-related functional connectivity and functional network connectivity following treatment as well as improved motor, cognitive functions. These pilot results provide the first evidence of the efficiency of 0.5 Hz of rTMS on a child with CP. Further large sample studies are needed to verify and expand the present findings.