Based　on　the　geological　conditions　of　Shenzhen　region,　the　experience　of　traditional　single　mode　shield　tunneling　was　summarized.　Studied　the　adaptability　and　technical　characteristics　of　shield　tunneling,　proposed　the　concept　of　EPB-TBM　dual　mode　shield　tunneling　machine,　and　fully　applied　it　to　the　fourth　phase　of　Shenzhen　Metro　project.　This　paper　analyzes　and　studies　the　practical　applications　of　multiple　engineering　projects,　summarizes　and　analyzes　the　efficiency,　consumption　of　cutter　tool,　mode　switching,　economy,　and　existing　problems　of　dual　mode　shield　tunneling,　and　puts　forward　relevant　suggestions　to　provide　reference　for　similar　projects　in　the　future.　©　2024　The　Author(s).