Abstract: In accordance with a multiple degrees of freedom vibration system with dynamic vibration absorbers (DVAs),in this paper, an equivalent admittance matrix and the power flows input major structure and minor structure are deduced on the basis of the theories of structure mobility Furthermore, regarding the net power flow of main vibration system as the controlled object, discussed profoundly are the single and multiple model controls of multi- degrees- of-freedom system with one or several absorbers attached. And the control mechanism and effect of dynamic vibration absorbers are revealed.