The invention discloses a foldable individual seat for a city railway vehicle, and belongs to the field of railway vehicle foldable seats. The foldable individual seat comprises a backrest frame, a seat
cushion, a seat installation base, a seat supporting base and a seat
cushion frame. The backrest frame is hung on hanging holes in the seat installation base. The seat supporting base comprises two limiting blocks, and each limiting block is provided with two top bead clamping grooves. A beam is fixed at the back ends of two end plates of the seat
cushion frame, the two ends of the beam are fixedly and vertically connected with two top bead structures respectively, a top bead is arranged on the top of each top bead structure, and the top bead structures are matched with the limiting blocks to form a top bead self-
locking mechanism. According to the foldable individual seat, the top bead self-
locking mechanism is adopted, the seat cushion can be limited and fixed through the top bead self-
locking mechanism when unfolded or folded, and operation is easy and convenient. The seat is installed in sliding grooves in the side walls of a vehicle body through sliding blocks, the installation method is simple and efficient, and later period repairing and maintaining are convenient. After being folded, the seat is self-locked, the physically challenged can place a
wheelchair at the position of the seat, and space is saved.