Firstly,the basic concept and principle of error—proof was introduced.Through the analysis of the causes of human error,the necessity of establishing and perfect the errorerror-proof management system was proposed.Secondly,based on the variation point such as man,machine,material,method and environment,the error-proof management system was planed,and the improvement cycle of"distinguish,treat and prevent mistakes"was implemented,the process management of production process was improved,the quality control and quality output were optimized.Finally,the classic cases of the error-proof management system was showed.