Abstract: This paper introduces the structure and implementation of operator evaluation method based on fuzzy expert system. High quality scoring system not only can evaluate operating quality, but also can instruct the lack in operating. The paper summarizes the importance of operation evaluation and the model of operation and scoring, and using fuzzy expert system to establish the scoring rule base and using forward reasoning to approach to reasoning. This scoring system is successfully applied in a boiler simulation training system. It proved that it is a real time, rapid and accurate way to evaluate operators. It can help the teacher to train objectively. The scoring system is of high value in industry process.

Key words: scoring rule base, scoring system, scoring, operational model