This study aim was to determine whether a structured age-appropriate playing programme with involvement of parents could promote healthy motor skills in preschool children. In this two group randomization pre-posttest quasi-experimental study, 160 children 3-5 years-old with their mothers were selected and equally allocated in two groups. For intervention group, four theoretical and 20 practical sessions in five groups of 6-8 participants, consisting of mothers and children of the same age, was conducted. After intervention, the gross and fine motor skills of intervention group were promoted (p < 0.05). The study results provide positive evidence about creating opportunities to practice of age-appropriate play in childhood, especially with parental engagement and support, on motor development.