Abstract: In this paper, the dispersion feature of the spherical low-frequency harotropic plantary waves in a zonally varying basic flow has been studied. The wave ray has been discussed and the approximate epuations for the wave ray tracing have been derived. And also the variation of the wave packet amplitude and energy has been discussed. The results obtained here can show the essential physical "picture"of the horizontal structure and evolution of the teleconnection paterns in general circulation.