Childhood is always the desire for entertainment and the threat of injury to the child. Perhaps, outdoor fitness equipment in parks, play areas, climbing, indoor playground, and sports areas is one of the favorite outdoor recreational activities for toddlers, preschoolers and school-age children. Since adults are responsible for the safety and well-being of children, it is important to consider the age and weight limits of outdoor fitness equipment to avoid playground-related accidents. Therefore, because designers and manufacturers of outdoor fitness equipment only use high-quality and strong materials as their products, there is no weight limit; however, to avoid accidental collisions and injuries, outdoor fitness equipment should be designed for people of three different ages And post road signs.