In　the　deep　foundation　pit　adjacent　to　river,　the　ground　between　bank　slope　and　retaining　structure　is　limited,　as　a　result,　the　conventional　models　can　not　be　used　for　the　calculation　of　earth　pressure.　Based　on　the　modified　generation　technology　for　multiple-segment　slip　surface,　the　active　earth　pressure　of　waterfront　foundation　pit　in　non-homogeneous　ground　was　deduced　through　upper-bound　analysis.　On　the　homogeneous　ground　condition,　the　proposed　method　were　validated　throught　a　comparison　with　their　counterparts　of　conventional　linear　or　logarithmic　fracture　models.　The　proposed　method　was　applied　to　an　engineering　instance　(i.e.　deep　foundation　pit　of　Agriculture　and　Forestry　University　Station　in　Fuzhou　Metro　Line　5),　it　is　concluded　that　the　active　earth　pressure　of　retaining　structure　increases　approximately　linearly　with　the　rising　of　water　level.　On　the　other　hand,　the　active　earth　pressure　increases　rapidly　and　then　stabilize　with　the　increase　of　width-height　ratio　of　foundation　pit.　When　the　width-height　ratio　exceeds　0.7,　the　active　earth　pressure　tends　to　stabilize,　which　implies　that　the　slip　surface　transferred　from　mode　(intersecting　with　slope)　to　mode　I　(intersecting　with　top).　Furthermore,　the　numerical　simulation　results　with　bracing　stiffness　reduction　show　that　the　shape　of　sliding　surface,　the　active　earth　pressure　of　retaining　structure　and　the　action　point　of　resultant　force　are　consistent　with　their　counterparts　of　upper-bound　analysis.　These　researches　could　provide　some　reference　for　the　scientific　design　of　retaining　structures　in　the　deep　foundation　pit　adjacent　to　river.　©　2022　Tsinghua　University.　All　rights　reserved.