A theoretical analysis model of micro-pore face mechanical seal was established,and the seal performance parameters,including opening force,liquid film stiffness,leakage and friction torque,were obtained by solving Reynolds equation with finite difference method.Sealing performance calculation software was developed in the MATLAB development environment.The main design ideas were given,and the calculation of performance parameters was realized.The application of the designed software was introduced through an example,and the influence of geometric structure parameters and operating parameters on sealing performance was analyzed.The results show that the software has good visualization effect,simple operation,and is convenient for engineers.