This book intend to provide role and effects of strength training on spastic little disease children's. The objective of the study to examine whether strengthening lower extremity improves gait speed, cadence, stride length and motor activity in spastic little disease children. The 5weeks lower extremity strength training programme is effective in improving muscles strength, cadence, stride length, speed and distance walked in 2 minutes. Hence it can be suggested that the programme of lower extremity strengthening can be incorporated in the therapeutic session to improve the gait performance of spastic little disease kids