A　layered,　segmented,　and　block　building　technique　was　created　during　the　construction　of　the　cut-and-cover　foundation　pit.　Traditional　foundation　pit　excavation　often　necessitates　both　support　erection　and　mechanical　excavation　at　the　same　time,　however　owing　to　the　intersection　of　support　and　excavation　mechanical　operation,　which　may　decrease　building　efficiency,　and　the　construction　requirements　are　higher　due　to　the　low　mechanical　characteristics　of　the　soil　in　the　silty　soil　layer.　Therefore,　the　construction　method　of　an　L-shaped　short　step　with　small　steps　soft　soil　foundation　pit　is　proposed,　based　on　the　mechanical　characteristics　of　the　silty　soil　layer　and　the　construction　operation　characteristics　of　the　foundation　pit.　After　excavation,　the　support　is　erected　using　a　numerical　calculation　of　the　stability　of　the　foundation　pit.　According　to　engineering　practice,　the　L-shaped　short　step　with　small　steps　soft　soil　foundation　pit　building　technique　can　significantly　facilitate　basement　pit　deformation,　improve　construction　efficiency,　and　be　popularized.　©　2023,　The　Author(s).