Underground　engineering　construction　will　inevitably　change　the　stress　state　of　surrounding　strata,　which　will　force　a　negative　impact　on　the　surrounding　environment,　even　leading　to　the　large　deformation　and　damage　of　some　adjacent　structures.　With　a　focus　on　the　deformation　of　a　typical　soil-rock　composite　stratum　site　in　the　construction　of　Changchun　Metro,　relying　on　the　shield　construction　of　a　parallel　twin　tunnel　project　between　Northeast　Normal　University　Station　and　Gong-Nong　Square　Station,　which　belongs　to　the　Changchun　Metro　Line　1,　the　site　deformation　characteristics　during　the　shield　driving　process　of　parallel　twin　tunnels　were　studied.　Based　on　the　data　obtained　from　field　monitoring　and　numerical　simulation,　ground　settlement　in　shield　driving　was　analyzed,　the　settlement　trough　was　studied　with　the　Peck　formula,　and　the　action　of　shield　driving　on　the　adjacent　tunnel　was　discussed.　Moreover,　the　influence　range　of　shield　driving　was　suggested,　and　the　interaction　between　the　twin　tunnels　with　different　axis　spacings　in　shield　driving　was　discussed.　Some　regular　results　obtained　can　provide　support　through　data　for　similar　projects　in　Changchun,　China.