Children's parks must be fun, safe, environmentally friendly and affordable in order to attract the eyes of many parents and make children forget. The business of children needs to be kept up to date in order to bring more wealth. The ph. D. Children's garden, which has been a good reputation for many years, can be successfully opened at a small cost and can operate quickly. Moreover, there is more support for entrepreneurship at headquarters and more economical. In order for children to grow up healthy and happy, doctoral children's playgrounds have turned their backs on traditions, giving priority to the creation of new ideas for play, a children's playground with a combination of the three-dimensional combination of science, which combines the functions of sport, sport, wisdom, fitness, etc. The doctoral children's park has not only novel features of entertainment, but also the creation of early teaching concepts, which are more trusted places for parents and children. The ph. D. Play children's garden, designed on the basis of the child's identity, is a combination of the three-dimensional set of science functions, such as play, sports, intellectuals, fitness, etc., and is the centre for the new generation of children and adolescents. The ph. D. Children's garden is a new, integrated and extremely powerful children's park designed for the nature of children who like to drill, climb, slide, roll, shake, swing, jump and shake. While playing, children develop an independent personality, exercise their body and brain. The ph. D. Children's park gives priority to the development of a new concept of play, and the challenging and rewarding function of play meets the strong curiosity and satisfaction of the child and fully corresponds to the psychological situation of the child's age group. The development and sale of the relevant cartoon dolls, toys, children's intellectual games and other child-related industries in ph. D. Children's gardens make more money! Ph. D. Children's gardens not only provide children with unlimited pleasure but also enable them to learn in play。