Indoor Playground is based on the design characteristics of children's entertainment through the combination of science and the formation of a three-dimensional set of recreational, sports, educational, fitness, and other functions for a new generation of children's activity center. Can say that it is a new, highly comprehensive children's playground, for children like drill, climb, slide, roll, shake, swing, jump, shake and other nature designs. Children play while developing an independent personality, physical exercise, brain puzzle. Naughty subject to site constraints, both indoor and outdoor, or irregular sites, can install, simple to manage, no power equipment, easy maintenance. Naughty with a random, non-dynamic, interactive and security features, it is not arbitrary mean field limit, whether it is indoor, outdoor, or irregular sites, can install the naughty fort; no dynamic refers to the naughty without any power plant to operate invisibly to save operating costs, but also protects the safety of play is also popular among buyers factors.