Rabbit Dens is a 3D printed kid’s playground. It pops up to create a natural rabbit-like habitat, which is designed to inspire kid motivation to explore the tunnel space and the pulpy surface. Regarding it unique shape, 3D printing technology was employed to make the slope mass (6*6*1.5 meters, the footprint and height ) by fusing 2 tons of environment friendly plastic and coating semi-polished pollution free paint. It successfully encourages the unacquainted children to build a small community fairly quick.