The aim of this research is based on the human factor knowledge to discuss the essential of the「human errors」 on the R.O.C. Air Force air safety events. Through the systematical management、classification and the CRM theory to analyze the invisible crisis factors and relationship between the pilots、flight crew and aviation organization. The main research structure is the theory of grey system, using the time series data and choosing the technical level、legalization level、knowledge level、communication level、judge level and leader level as the main factors. Meanwhile, classify the relevant ratio of the different official rank and accident layers and with the result of relevant order to analyze the relationship of the rank of the pilot and the accident rate.