The　urban-rural　conjunction　areas　is　a　particular　product　of　the　process　of　urbanization.　Due　to　the　dual　urban-rural　property,　the　transportation　development　characteristics　in　the　urban-rural　conjunction　areas　also　have　dissimilarities,　and　then　cause　some　high　risk　districts　on　the　highways.　This　article　take　Tongzhou　district　in　Peking　city　as　an　example.　According　to　the　related　data　of　the　western　project　-＇Road　traffic　database＇　of　the　Ministry　of　Transportation　and　Communications,　the　authors　use　spatial　data　analysis　method,　and　divide　the　level　of　safety　service(LOSS)　with　the　accident　rate　per　ten　million　cars　per　kilometer　to　research　whether　the　highway　traffic　accidents　present　a　specific　distribution　on　the　two-dimensional　or　not.　Finally,　the　authors　get　the　distribution　map　and　then　analyze　the　formation　reason　of　the　high　risk　district.　An　approach　to　tackle　the　problem　is　proposed.