Abstract: The structure and movement of tropical cyclone is studied using an analytical as well as a numerical model in a beta-Plane nondivergent barotroPic framework.The analytical model and the linear version of the numerical one give essentially the same result:the energy dispersion from tropical cyclone can creat anL-H-L wave-train in the east region of tropical cyclone.Three numerical experiments whose integration times equal to seven model days by the nonlinear model exhibit that the closed high in the wave-train produces obvious influence on the structure and track of troPical cyclone.