Abstract: Elaborated in the paper is a three-dimensional CAD-based visualization solution for skew rolling pass parameters.Taking the three types of skew rolling mills(barrel type piercer, cone type piercer and rotary expanding mill)as examples, the solving steps and processes which are related to roll gap values, and velocity vector of the contact point between roll and workpiece are described.Also described is the verification method for the calculation result.Based on massive data, effects by rolling mill adjustment and reworked roll on pass gap value are analyzed and discussed.It is concluded that the visualization solution method is suitable for pass parameter analyses of different types of skew-rolling mills, and is capable of providing more accurate data to support design of the operational tools.