According to the characteristics of PQF continuous rolling pass,the relationship between spread coefficient,wall thickness coefficient and elongation are analyzed.The section shape of tube in each stand outlet,the efficient working radius and the rotational speed of each roll are obtained,therefore,the pass parametric design is completed.A thermal-mechanical coupled model of continuous rolling tube’ s forming process is established by the three-dimensional elasto-plastic finite element method,the section shape and area of tube in each stand outlet are forecasted,which is used to modify the pass.The rolling force of each roller is predict too,which provides a guidance for pass design.In addition,a visual software of PQF pass parametric design system on heavy calibre seamless tube is generated with Visual Basic.The forming dimension of tube and the rolling force of each roller are successfully obtained,by simulating the forming process of a certain series heavy calibre seamless tube.This system posses practical utilization value.By using this system,the development cycle of new product can be shortened,the reliability of pass design can be improved,and the energy consumption of rolling mill and production cost can be decreased. According to the characteristics of PQF continuous rolling pass, the relationship between spread coefficient, wall thickness coefficient and elongation are analyzed. Section shape of tube in each stand outlet, the efficient working radius and the rotational speed of each roll are obtained, therefore, the pass parametric design is completed. A thermal-mechanical coupled model of continuous rolling tube ’s forming process is established by the three-dimensional elasto-plastic finite element method, the section shape and area of ​​tube in each stand outlet are forecasted, which is used to modify the pass. rolling force of each roller is predict too, which provides a guidance for pass design. In addition, a visual software of PQF pass parametric design system on heavy caliber seamless tube is generated with Visual Basic. forming dimension of tube and the rolling force of each roller are successfully obtained, by simulating the forming process of a certain series heavy calibre seamless tube.This system posses practical utilization value.By using this system, the development cycle of new product can be shortened, the reliability of pass design can be improved, and the energy consumption of rolling mill and production cost can be decreased.