A refrigerator, comprising: a cabinet having a storage chamber provided therein and an open front; at least one door provided at a front of the storage chamber for opening and closing the cabinet; a cooling device for cooling the storage chamber; and a raising/lowering device provided in the storage chamber to fold downward and unfold upward so as to move a container upward and downward, wherein the raising/lowering device includes: an upper frame provided at an upper side thereof; a lower frame provided at a lower side of the upper frame; and a pair of scissor assemblies arranged between the upper frame and the lower frame; characterized in that the refrigerator further comprises an anti-loosening device provided at the raising/lowering device and allowing the raising/lowering device to rotate relative to a front end thereof when the raising/lowering device is removed upward so as to maintain a folded state of the raising/lowering device; wherein the anti-loosening device includes: a locking means preventing the raising/lowering device from unfolding; and a handle provided on each of rear end parts of the raising/lowering device; and wherein the locking means includes a lower locking means provided in the lower frame and an upper locking means provided in the upper frame; and wherein the lower locking means includes: a locking means casing fixed to a middle of the lower frame; a lower hook configured to move in the locking means casing, and including a lower hook body having a predetermined vertical height, a support end provided at a lower end of the lower hook body to support the lower hook body, and a lower hook end protruding by perpendicularly bending from an upper end of the lower hook body; and a force applying member applying a unidirectional force to the lower hook; and wherein the storage chamber includes a spacing protrusion provided on a middle part thereof by protruding upward therefrom; and an inner part of the lower hook body is hollow such that a lower part of the lower hook body is open and has a protrusion groove, wherein when the spacing protrusion is received in the protrusion groove, a rear end part of the protrusion groove is in a sliding contact with a rear surface of the spacing protrusion such that the lower locking means and the upper locking means are separated from each other. a cabinet having a storage chamber provided therein and an open front; at least one door provided at a front of the storage chamber for opening and closing the cabinet; a cooling device for cooling the storage chamber; and a raising/lowering device provided in the storage chamber to fold downward and unfold upward so as to move a container upward and downward, wherein the raising/lowering device includes: an upper frame provided at an upper side thereof; a lower frame provided at a lower side of the upper frame; and an upper frame provided at an upper side thereof; a lower frame provided at a lower side of the upper frame; and a pair of scissor assemblies arranged between the upper frame and the lower frame; characterized in that the refrigerator further comprises an anti-loosening device provided at the raising/lowering device and allowing the raising/lowering device to rotate relative to a front end thereof when the raising/lowering device is removed upward so as to maintain a folded state of the raising/lowering device; a locking means preventing the raising/lowering device from unfolding; and a handle provided on each of rear end parts of the raising/lowering device; and wherein the locking means includes a lower locking means provided in the lower frame and an upper locking means provided in the upper frame; and a locking means casing fixed to a middle of the lower frame; a lower hook configured to move in the locking means casing, and including a lower hook body having a predetermined vertical height, a support end provided at a lower end of the lower hook body to support the lower hook body, and a lower hook end protruding by perpendicularly bending from an upper end of the lower hook body; and a force applying member applying a unidirectional force to the lower hook; and wherein the storage chamber includes a spacing protrusion provided on a middle part thereof by protruding upward therefrom; and an inner part of the lower hook body is hollow such that a lower part of the lower hook body is open and has a protrusion groove, wherein when the spacing protrusion is received in the protrusion groove, a rear end part of the protrusion groove is in a sliding contact with a rear surface of the spacing protrusion such that the lower locking means and the upper locking means are separated from each other.