Vibration isolating and cushioning constituted of combined frame and honeycomb paperboard was designed to achieve soft landing of airdropped tethered balloon platform. Considering the nonlinear characteristic of honeycomb paperboard, the airdropped tethered balloon platform was equivalent to a two-degree-of-freedom nonlinear vibration system. After that, numerical simulation on airdropping impact was done with the method of Runge-Kutta in MATLAB environment. Furthermore, the effect on airdropping impact of the key component in the airdropped tethered balloon platform was analyzed under the condition of different system parameters, which could be a reference for the furthering design of isolating and cushioning of tethered balloon platform.