When dynamical dry strap with strong subsidence motion and dynamical abnormal top of troposphere enters into warm wet and instability condition,it will make convection system progress.

The drying dynamics models of baked drying and microwave drying were Page equation,and the drying dynamics model of vacuum drying was simplification diffuseness mode.

The principles,characters,drying dynamics and the important effect factors of vacuum-microwave drying technology are analyzed in this paper;the applications of the vacuum-microwave drying technology are introduced at the same time.