The　soil　between　the　front-row　pile　and　the　back-row　pile　is　defined　as　the　limited　soil　in　the　structure　of　the　double-row　pile.　However,　the　Rankine　theory　is　inappropriate　for　analyzing　the　properties　of　the　limited　soil.　Considering　the　tangential　friction　of　pile-soil　for　the　double-row　pile,　this　paper　develops　formula　of　earth　pressure　of　limited　soil　when　it　was　in　limited　equilibrium　state.　The　simplified　formula　of　earth　pressure　intensity　of　limited　soil　is　also　founded.　The　analysis　shows　that　the　result　stemmed　from　the　formula　equals　to　that　of　numerical　simulation　(FLAC3D).　Therefore,　the　formula　of　limited　soil　is　reasonable　and　valuable.　The　values　of　earth　pressure　intensity　of　limited　soil　are　the　same　among　different　width　(2d–5d).　They　are　less　than　that　of　positive　earth　pressure.　The　value　of　earth　pressure　intensity　at　the　lower　level　of　the　limited　soil　is　far　more　less　than　that　of　positive　earth　pressure.　©　2018,　Springer　Nature　Singapore　Pte　Ltd.　and　Zhejiang　University　Press.