A reasonable and healthy playground is an important guarantee for children to develop cognition through physical games. [] However, due to the influence of early childhood psychology and the popularity of stereotypes, the existing industrialized production of children’s play space has been defined and designed from the perspective of adults. With the help of interdisciplinary thinking and tools, based on the theory of child psychology and the circular game system, we propose a new method of children’s playground design. At first, we reviewed the fallacies of the past children’s playground design and their causes and summarized the elements of ideal children’s playground construction. Secondly, we introduced the Physarum polycephalum algorithm and brought this algorithm to the path generation of different terrains and environments. Third, we analyze the path and introduce the amoeba bionic algorithm tool to determine the facilities, and then generate a series of play facilities. Finally, we brought this result into the case and discussed its potential applications in interactive design.