In　China,　with　the　rapid　development　of　subway　construction,　the　site　deformation　induced　by　subway　construction　is　an　interesting　and　hot　issue　in　civil　engineering.　Focusing　on　the　mechanism　and　characteristics　of　site　deformation　induced　by　parallel　shield　tunnel　construction　in　typical　soil-rock　composite　strata　of　Changchun　region,　and　relying　on　the　subway　tunnel　between　Northeast　Normal　University　Station　and　Gongnong　Square　Station,　which　belongs　to　the　Changchun　Metro　Line　1,　the　tunnel　construction　process　is　simulated　using　FLAC(3D)software.　In　this　paper,　the　numerical　modeling　and　parameters　for　shield　tunneling　are　described　in　detail,　and　the　mechanism　and　characteristics　of　site　deformation　induced　by　shield　tunneling　are　discussed　systematically.　Furthermore,　the　influence　of　construction　parameters　on　site　deformation,　including　construction　sequence,　tunnel　spacing　and　earth　chamber　pressure,　are　studied.　The　results　can　provide　reference　for　similar　projects　in　the　future.