A ρ-σ incorporated coordinate 12-layer primitive equation model is adopted to investigate the distribution characteristics of the East-Asian cyclogenesis frequency in relation to the activities in the panetary frontal zone and dynamic effects of the Qinghai-Xizang Plateau.Numerical experiments show that the development and motion of the East-Asian cyclone are significantly correlated to the climatological locationof the frontal zone, and the joint effects of the westerly jet stream and the forcing of the plateau’s orography result in the distribution characteristics of vortexes, small highs and shears over the huge topography and the difference in their tracks.