Based　on　unascertained　measurement　theory,　a　comprehensive　evaluation　method　to　propose　the　vulnerability　of　regional　geological　disasters　was　presented　in　this　paper.　The　function　of　unascertained　measure　of　all　evaluation　indexes　was　established,　the　weights　for　indexes　was　calculated　by　entropy　weight　theory,　and　a　result　of　the　vulnerability　of　regional　geological　disasters　has　been　carried　out　using　the　rules　of　credible　recognition.　This　method　can　solve　a　lot　of　unascertained　problems　in　comprehensive　evaluation　the　vulnerability　of　regional　geological　disasters,　and　also　can　analyse　the　vulnerability　of　regional　geological　disasters　objectively.　Furthermore,　using　listed　40　the　regions　as　samples,　the　effectiveness　were　discussed　by　the　aid　of　comparison　with　the　results　of　comprehensive　index　method.　The　research　results　show　that　the　comprehensive　evaluation　method　of　unascertained　measurement　presents　excellent　performance,　high　accuracy　and　it　thus　has　wide　applying　prospect,　it　is　an　effective　new　way　to　evaluate　the　vulnerability　of　regional　geological　disasters.　©　2014　ejge.