Abstract: This paper presents a method of rating deterioration for sluice, the method is simpleand easy to operate, it proved to be accurate to certain extent, the method is on the basisof practical data and results from a long time observation. According to the principle ofstressing on the main factors, and meanwhile giving consideration to the subordinate factors,obtained the rating conclusion on the state of deterioration for a whole sluice by theway of weighted hierarchy and synthetic reasoning.