The following are the main issues addressed by this thesis : 1 ) the framework design of intelligent decision support system for man - hour ration of tooling . on the basis of the theory of decision supported system , expert system and intelligent reasoning , according to the characteristic of the man - hour rationing , this thesis designed a system framework which is adapted to both enterprise and workshop levels " man - hour rationing by putting forward three kinds of methods called respectively checking list , reasoning decision and modifying standard case 论文主要完成的研究内容如下: 1 )工装工时定额智能决策支持系统总体结构的设计以决策支持系统、专家系统和智能推理技术为基础,根据工装工时定额制订的自身特点,设计确立了系统的总体结构,提出采用查表计算、推理决策和标案修改三种定额方法,使系统满足两级工时定额制订工作需要。