It＇s　important　content　to　assess,　identify　and　analyze　dangerous　location　for　road　safety　research.　But　until　now,　there　is　not　a　statistical　method　to　identify　dangerous　location,　which　is　based　on　a　fine　theoretical　foundation,　which　is　easy　to　use,　suitable　for　any　area.　Based　on　the　Chinese　characters　of　road　management,　a　statistic　method　for　identifying　dangerous　location　in　an　area　or　country　is　studied.　Firstly,　statistic　road　system　is　divided　into　four　types　and　seriousness　of　accident　is　divided　into　four　categories,　in　which　indirect　economic　loss　is　included.　Secondly,　based　on　the　simple　Poisson　distribution　method,　the　distribution　of　accidents　flow　is　determined.　Lastly,　according　to　the　character　of　accident　distribution,　traffic　volume,　accident　seriousness,　economic　loss　and　economic　supporting,　a　nature　and　quantitatively　determined　double　index　is　given　to　confirm　limit　values　of　high　accident　frequency　and　high　accident　rates.　Dangerous　location　is　determined　by　these　two　limit　values.　According　to　different　high　accident　frequency　and　high　accident　rates,　types　of　dangerous　locations　and　their　countermeasures　are　confirmed.