Human error is analyzed as an event and conceptual Human Error Hierarchy Diagnosis model is built,which includes hierarchies of main causal,sub-main causal and minor sub-main causal factors and so on.

• 将人误作为一个事件来进行分析,构建了概念上的人误原因层次诊断模型,它包括原因主因素、子因素和子子因素层等。