The utility model relates to the technical field of marine tools, disclose a marine container locking structure, including horizontal platform piece department, the front side and the back side of horizontal platform piece department all are established with arc recess, the middle part longitudinal through -hole of horizontal platform piece department is established with through -hole groove, the middle part longitudinal integral fixed setting of through -hole groove of horizontal platform piece department has vertical platform piece department. Through setting up the whole twist lock locking structure main part is the
sheet structure composition of cross -intersection, make the whole structure is in the corner portion of container and container stacking, make two outer convex locking ear opposite buckle sleeve lock the frame corner portion of both sides container, make bottom locking inclined arm and vertical platform piece department very easily embed in the corner portion of container stack, and locking structure thickness is smaller, avoid causing the interval thickness between container and container to increase, extremely benefit the container and container's accumulation stress, guarantee the effective application life of container.