Abstract: By using FICE scheme and taking the atmospheric basic motion equations as the governing equations, a full-nonlinear numerical model in 3-dimensional spheric coordination is established, and a reasonable polar boundary is specified, the examination of this model is also presented. The calculation result exhibits the essential characteristics of the nonlinear propagation of gravity-wave packet in atmosphere: the whole wave packet propagates upward, the wave-associated disturbance velocity increases with the increasing height.