Abstract: This paper built a kinematics equation and dynamics equation for a threeaxis electric rotary table from the point of view of dynamics of multibody systems, and studied the effect of the dynamic coupling. An active control strategy using velocity internal feedback for a threeaxis electric rotary table dynamic coupling was presented. This strategy need not depend on the accurate modeling of the study object and it is very easy to be accomplished. The simulation result shows that this coupling control strategy is valid and the rotary table has obtained a good position accuracy and velocity smoothness. At last the paper verifies this control strategy in the practical application and the rotary table actually obtains a good control performance using this control strategy.