Abstract: The concept of time entropy of the production system is defined, and the way is analyzed in which the lean introduction improves the 5 major elements of production system, human resource, machine, materials, environment, to influence the response time of production system. Following the principle of science and practicality, the appraisal indicators system of lean management implementation and an evaluation model based on time entropy are established, combining qualitative and quantitative analysis, which provides an effective basis for the effect evaluation of lean management implementation in the production system. Then the applicability and effectiveness of the indicators structure and mode is finally validated by a case study in a hose enterprise, based on the comparison between the evaluation results and enterprise actual situation. The research results provide a new methodology to evaluate the introduction of lean management in the production system.

Key words: production system, lean management, time entropy, evaluation system, 5 production elements