The invention discloses an annular totally-enclosed buckle type electrowinning cell, and belongs to the field of hydrometallurgy. The annular totally-enclosed buckle type electrowinning cell comprisesa supporting device, an outer shell, a cell body mechanism and an automatic buckling release device, wherein the supporting device comprises a ceiling and a support; the outer shell is arranged underthe ceiling; the cell body mechanism is arranged in the outer shell; the cell body mechanism comprises an upper cell body and a lower cell body which are annular; the upper cell body is provided witha positive plate fixed hanger and a negative substrate fixed hanger; the top ends of the positive plate fixed hanger and the negative substrate fixed hanger are respectively and fixedly connected with the ceiling, and a positive plate and a negative substrate are respectively arranged on the bottom ends of the positive plate fixed hanger and the negative substrate fixed hanger; the automatic buckling release device is arranged on the negative substrate; a feed opening and an oblique slide way are arranged on the bottom end of the lower cell body; the oblique slide way is communicated with theautomatic buckling release device. The annular totally-enclosed buckle type electrowinning cell disclosed by the invention is good in air tightness, and harmful as cannot spill; after a nickel bucklenegative substrate is repeatedly stripped, a gap cannot be generated between a conductive post and the negative substrate, electrolyte cannot permeate, and the problem of growing nodules is completely eradicated; the cell body is compact in structure, and the occupied space is small.