Alternative　construction　solutions,　including　cut-and-cover　method　and　cover-and-cut　reverse　method,　are　proposed　for　Xidan　station　engineering　on　Line　4　of　Beijing　subway.　Design　parameters　and　construction　methods　for　the　retaining　and　support　structures　are　given,　respectively;　and　their　advantages　and　disadvantages　are　analyzed.　Cover-and-cut　reverse　method　is　selected　as　the　preferred　construction　solution　based　on　the　comparison　of　technology,　economy　and　environment.　The　construction　method　about　the　cover-and-cut　solution　are　erected.　Although　the　preferred　solution　costs　a　little　more　than　the　alternative　one,　the　construction　scheme　will　have　little　effects　from　surroundings　and　the　influence　to　transportations　on　the　ground　surface　will　be　reduced.　It　is　verified　through　practice　that　the　cover-and-cut　reverse　method　is　safe　and　feasible.