There　are　many　uncertainty　risks　during　the　construction　of　tunnels　and　underground　works,　which　are　both　significant　and　numerous.　Risk　analysis　and　assessment　is　fundamental　for　risk　management　in　tunnel　and　underground　engineering.　In　this　paper,　by　analyzing　the　characteristics　of　subway　station　construction　with　open-cut　method,　accidents　that　have　occurred,　and　extensive　collection　of　relevant　information,　a　more　comprehensive　risk　sources　in　subway　station　construction　with　open-cut　method　are　listed.　Further　more,　improved　questionnaire　has　been　applied　in　construction　site　research,　which　shown　that　subjective　information　has　been　extracted　accurately　and　accepted　by　a　lot　of　people.