The present invention relates to a foldable container, and an elastic rotating apparatus for a foldable container. To this end, the present invention relates to a foldable container comprising a pair of lateral plates foldably formed between a top plate and a bottom plate, wherein the lateral plates comprise an upper lateral plate and a lower lateral plate which are inwardly foldable by a hinge. The upper and lower lateral plates of the lateral plates respectively comprise upper molds and lower molds at corners on both sides thereof, and the upper and lower molds are mutually locked or unlocked by means of movement of a locking means. Accordingly, the present invention has the technical effects of allowing a user to simply lock or unlock the folding of the container by controlling the locking means in the process of folding the container, and enabling the upper and lower molds to be automatically unfolded.