The goal of this study was to see how functional training affected the velocity of the wrist in reaching objects of various shapes (cylinder, cube, pyramid) and sizes (small, medium, large) as well as the eye-hand coordination subtest of the Bruninks Osertsky [1] test in an 8-year-old boy with Down Syndrome. The current study is an experimental design with a single individual. The Down Syndrome Association introduced one person with Down syndrome who was not suffering from any significant physical or motor problem (Gender: male; Age: 8 years old) to participate in the study. The motion analysis device was used to record the pretest and posttest of reaching to objects of various shapes and sizes, and the eye-hand coordination subtest of the Bruninks Osertsky test was performed. The participant took part in 24 functional training sessions, each lasting about 60 minutes (5 days a week). Each training session consisted of three 15-minute segments separated by a 5-minute break. The results revealed that the mean velocity of the wrist to reach the medium cylinder was higher than the others (V=596.83), as was the effect size (E=0.94). The mean of the wrist velocity in the posttest revealed that the participant performed better than in the pretest. In addition, when compared to the pre-test, the quantity, time, and velocity of implementation of nine sub-tests of eye-hand coordination rose in the post-test. These results Support earlier studies that claim that task-oriented training increases movement patterns in people with Down syndrome according to the notion of training specificity. Also, we followed up with the child's parents about his schoolwork after completing the exercises, he did his schoolwork more carefully.