The planning and design of children's playground should not only meet the needs of children's play, but also be determined according to the characteristics of children's physical condition, psychological characteristics and park environmental conditions. Children’s activity scales and physical and mental characteristics are different from those of adults. Therefore, the arrangement of their activity spaces and play facilities should be designed to serve children, fully respect children’s personality, follow children’s autonomy, and develop children’s creativity in activities. Deal with the challenges and safety of activities, the relationship between private space and public space, dynamic space and static space, and create a good place for children's activities. In the transformation design, attention should be paid to the eyes and body dimensions of the children when walking, running, climbing and crawling in the game activities, and increase the service facilities based on the children's activity scale.