Abstract: To improve the convergence speed and the structure stability of the optimization process with traditional evolutionary structural optimization(ESO)method,a parameter adaptive algorithm was proposed based on penalty value selection and structure information,making the parameters of the ESO change with the iterative process.The analysis results of some typical numerical examples show that,the parameter adaptive ESO method with appropriate penalty value selection can solve the problems of fixed parameters and parameter selecting in the traditional ESO method,and can improve the optimization speed and structure stability in the optimization process.Applying the method to the optimization design of the control valve,results show the stiffness of the control valve can be improved by 10%,validating that this method can be extended to three-dimensional structure optimization and provided design for valve structure.