Abstract: An apparatus for children's playground with trampoline includes a trampoline surface, a trampoline base, a staircase, and a safety net. The trampoline base provides a foundation for the trampoline surface so that the trampoline surface can be connected to a trampoline frame of the trampoline base by coil springs. The trampoline base includes a pair of concave parameter edges and a pair of slope parameter edges. The pair of concave parameter edges and the pair of slope parameter edges provide uniquely shaped trampoline surface for the users of the playground apparatus. The staircase enables the users to access the trampoline surface, and the safety net provides a protective wall for the user so that the users are able to stay within the trampoline surface.