The invention discloses a container leg column installation method, which comprises the following steps: delimiting a center line of a container; determining the spacing of containers and the number of containers from the center line of the container to the side of the ship; drawing a half-width auxiliary line; determining the transverse installation position of the box foot column; determining the longitudinal installation position of the container leg column; determining the horizontal installation height of the container leg column; installing container foot post. The invention ensures thatthe container hatch cover can be synchronously positioned with the container hatch on the container hatch post after being loaded on the ship, avoids the influence of the arrangement and positioningof the container hatch hatch props on the node of the cabin opening to shorten the construction period, and greatly improves the construction safety.