The application relates to the technical field of container ships, and discloses a box column for a container ship in a narrow space, which comprises an upright box column base and a prone open detachable small box column. The upright box column base comprises a side box column base, an in-hatch coaming box column base and a connecting platform. The upright box column base is vertically connected to a main
deck. The side box column base and the in-hatch coaming box column base are respectively arranged on the two sides of a hatch coaming. The connecting platform is horizontally connected between the side box column base and the in-hatch coaming box column base. The prone open detachable small box column is arranged on the upper end of the side box column base and the in-hatch coaming box column base. The side box column base close to the side and the in-hatch coaming box column base are integrated. The tensile bending load on the box feet on the two sides of the container is borne by the two box column bases, the strength and rigidity of the box
column structure are effectively improved, and the two box column bases are arranged on the two sides of the hatch coaming, space is fully utilized, and arrangement is facilitated.