The factors of the generation and development of the mesoscale and Subsynoptical Scale Systems are Studied. Numerical experiments show that the interaction between the circulation of the typhoon outer region and middle latitude synoptical system can trigger off the local disturbance and result in the formation of the cloud cluster and rain belt and the large topographic forcing played an importantrole. The effect of the tropical cyclones and its lifting of the topographic convengence can cause mesoscale disturbance, propagating in the way such as gravity wave.