Based on a classical model of the noise and vibration control, the dynamic modal of the turntable shafting of the typical half shaft system (shaft-bearing-framework) is established. The transmission matrix method is applied to analyze the dynamical model. The power flow expression of the subsystem is derived from theoretical analysis using the sub-structure mobility method. The bearing system uses Lim model. The technology lays foundation on the vibration property of the turntable structure for the further research.