Abstract: An analysis of the kinetic energy budget for a quickly developmental subsynoptic scale Bohai cyclone is made by using FGGE-Ⅲb data for the period 24-25 November 1979.The results show that net flux of potential energy and kinetic energy across the lateral boundary of vertical column for the area used in this study is divergent,and energy sources needed at the development stages of cyclone disturbance depend mainly on the kinetic energy generation,conversion and the larger scat processes which are not resolved with the given network point area.About wind field intensification within plant boundary layer during the cyclone control,the external energy sources depend mainly on the boundary layer kinetic,potential energy nit flux convergence,the internal energy sources depend mainly on kinetic energy Reneration and kinetic energy conversion.