Abstract: The fundamental principle of Pilger mill rolling process and the establishment method of the mathematical model of rolling speed parameters are described and the model is simplified. Both the precise production synchronicity and the high dimensional accuracy of finished pipes are realized in the rolling production based on the rolling parameters calculated with the simplified model. The simplified model of the rolling parameters is applicable to the rolling parameters setting in Pilger mill. But the limitation of some factors as the rolling temperature of a rolled piece on a roll revolution should be full considered when using the model.