The work aims to study the precision and ultra precision mirror grinding experiment of ZGMn13Cr2 high manganese steel by ELID grinding technology to solve the problem of poor processing performance and to improve its surface quality and then use the quadratic regression universal rotation design test to explore the influence of different test factors on the surface quality of ZGMn13Cr2 high manganese steel, and optimize the process parameters of each factor. The sample with diameter of f50 mm and thickness of 10 mm was processed by ELID with metal bonded diamond wheel with grain size of 240# and W10 after the modularization of ELID grinding process for MSG612-CNC ultra precision forming surface grinder to compare the processing effects of two kinds of grinding wheels. The process test was carried out by the universal rotary design of quadratic regression. Then, the mathematical model of quadratic regression of surface roughness was built to explore the influence degree of different test factors on the surface quality of workpiece. Decision coefficient R2 was used to test the fitting degree of quadratic regression model to the actual situation. At last, LINGO software was used to optimize the quadratic regression mathematical model to get the best combination of process parameters of various experimental factors in the ELID grinding of ZGMn13Cr2 high manganese steel. After machining with W10 metal bonded diamond wheel, the sample had a high precision mirror effect, and there was no burn on the surface of the sample processed with two particle sizes. The fitting degree of the quadratic regression model to the actual situation was 99.24%, and the prediction results of the model were instructive to the actual machining. The optimum technological parameters of grinding wheel were obtained, with linear speed of 35 m/s, electrolytic voltage of 90 V, grinding wheel feed of 2 μm and electrolytic clearance of 0.734. ELID Precision mirror grinding technology can greatly improve the processing efficiency and accuracy of ZGMn13Cr2 high manganese steel, reduce the surface burn and crack of workpiece, and has good application value in the grinding of high manganese steel.