Inclusion Criteria:  Diplegic CP children. Their age ranges from 18 months to five years old. All levels of GMFCS will be included. Both sexes will be included. All children were medically and clinically stable. Parents must be able to write and read.  Exclusion Criteria:  Diplegic CP children, who might have one or more of the following:  History of chronic cardiac or chest disease. Any behavioral disorders. Current hospitalization for urgent medical reasons. Significant visual or auditory impairment. Previous history of Botox injection within last six months.