The present disclosure relates to a foldable container including a bottom plate, a top plate, and side wall panels provided between the bottom plate and the top plate, in which the side wall panels include a front panel, a rear panel, a first side panel, and a second side panel, and the container includes first and second torsion bars respectively provided at lower ends of the first and second side panels to generate torque when the first and second side panels are rotated, third and fourth torsion bars respectively provided at lower ends of the front panel and the rear panel to generate torque when the front panel and the rear panel are rotated, and a first rotation support member having an L-shape, including one end coupled to a post coupling point (220) spaced apart by a predetermined distance from the lower end of the front panel, and the other end coupled to a third torsion bar at a bottom plate coupling point (210) located on a side spaced apart by a predetermined distance from an end of the bottom plate to support the rotation operation of the front panel, in which the top plate is completely detachably coupled to the side wall panel.