Basing on analysing the knowledge of machanic design,the article proposes the expression model of meta-knowledge in the field,two-level inferring model and the strategy of the conflict-settlinging.

• 该文在分析机械设计领域知识的特点的基础之上,提出了机械设计领域知识的表示模式以及含有元知识的二级推理模型和冲突消解策略。