Based on the MCM framework proposed by Hollnagel, an organization-oriented structured technique for analysis of human factor accident was developed. The technique was discussed from three points of model, classification scheme and method. Human error event model and human cognitive model are integrated into a reference model for cause analysis of human error, which indicates the developing process, causal mechanisms of human factor accident and the nature of human cognition. The action errors, cognitive errors, failures of error recovery and causal factors of human error are analyzed, resultin...