Abstract: In this paper,numerical simulations of axisymmetric coextrusion flow have been undertaken for polymer melts. First construct the mathematical model,then use the finite element method to simulate the flow field behaviour of axisymmetric coextrution flow,including the determination of interface location,velocity and pressure fields.As the normal velocity is zero at the interface,we can determine the interface by interations.Double nodes have been used at the interface to ensure continuity of velocities and stresses and to capture the pressure discontinuity.Tenner iterative method is employed to solve the nonlinear equations for the flow of concentric layers in circular die.Results of coextrution stick on pressure vs.volumetric flow rates are provided by finite element method, and compared with analytical solutions,satisfactory agreement is obtained.The numerical method can be applied to the complex entry which has no analytical solution.The results of numerical simulation in this paper can be used directly in the optimum design of coextrusion die.