Abstract: In order to improve the quality of the seamless steel pipe product，an Abaqus-based three-dimensional thermal coupled finite element model of the 5-stand PQF continuous rolling process is established as per the actual continuous rolling manufacturing process. The simulation results are analyzed based on the characteristics of the continuous rolling process. The results show that the radial，circumferential，and axial stress distributions at the top of the pass and the roll gap during continuous rolling are not the same due to the influences by the process parameters such as roll position，deformation，and rolling speed of each pass. Likely the axial stress states of the inner and outer surfaces of the tube are different to each other. Further the corresponding laws are summarized，and the reasons for and effects by the changes in anisotropic stress are discussed. The simulation results of the dimensions and rolling force from the simulation of the raw pipe are consistent with the measured results，getting the reliability of the model successfully verified. The research results are worthy using as reference for the design and optimization of related processes in the continuous rolling process.