The total kinetic energy balance of heavy rainfall mesoscale environment is studied with a set of high resolvable data of mesoscale experiment. Area time averaged results indicate that energetic process in the heavy rainfall mesoscale environment is active

characterized by cross contour dissipation

horizontal flux divergence

and transfers of energy from subgrid to grid scale motion. Subgrid effects are considered to be the cumulus convection in the case. Energetic process is more active in upper layer than in lower layer. The upper layer jet stream has great effect on the balance of kinetic energy. Difference of kinetic energy balance between strong convective and weak convective situations is also studied. It is found that the energetic processes in the two situations are different.Great cross contour dissipation and energy transfer from subgrid to grid scale motion are found in the mid layer troposphere in the strong convective situation.