The　paper　brought　forward　a　rapid　risk　analysis　method　of　Highway　BOT　Project　based　on　using　the　datum　of　feasibility　reports,　which　would　be　helpful　for　decision-makers　and　assessment　professionals.　From　the　risk　of　BOT　project,　the　authors　discussed　the　difference　between　the　project　assessment　and　feasibility.　Especially,　the　authors　analyzed　the　difference　in　cost　components,　benefit　calculation,　keeping　away　risks　in　details.　Based　on　those　analysis,　the　rapid　risk　analysis　method　was　put　forward　so　as　to　solve　the　problems,　such　as　how　to　use　the　conclusions　of　feasibility　reports　to　judge　and　guard　against　risks,　how　to　gain　the　useful　information　and　data　from　feasibility　reports　quickly.　In　addition,　a　case　was　also　provided　to　explain　how　to　use　the　method.　The　paper　would　be　expected　to　be　helpful　for　decision-makers　and　assessment　professionals.