A refrigerator, comprising: a main body having a storage room formed therein; a cooling device cooling the storage room; a door rotatably connected to the main body so as to open/close the storage room; a door storage mounted to the door and having a side storage product entrance/exit portion formed therein; a door locking mechanism locking the door or releasing the locking of the door when the door is rotated to an acute opening angle at which the side storage product entrance/exit portion is exposed between the main body and the door, the releasing of the locking of the door being performed when the door is closed; and a door manipulation portion manipulating a locking mode of the door locking mechanism, characterized in that the door locking mechanism comprises: a moving locking member mounted in the door so as to be ascended/descended; a door latch mounted in the door, and having a holding mode in which the moving locking member is descended to be held thereto and a holding release mode in which the moving locking member is ascended by releasing the holding of the moving locking member to the door latch; and a locking member holder having a holding groove portion formed therein, wherein the moving locking member is inserted into the holding groove portion and held to the door latch when the door is rotated to the acute opening angle. a main body having a storage room formed therein; a cooling device cooling the storage room; a door rotatably connected to the main body so as to open/close the storage room; a door storage mounted to the door and having a side storage product entrance/exit portion formed therein; a door locking mechanism locking the door or releasing the locking of the door when the door is rotated to an acute opening angle at which the side storage product entrance/exit portion is exposed between the main body and the door, the releasing of the locking of the door being performed when the door is closed; and a door manipulation portion manipulating a locking mode of the door locking mechanism, characterized in that the door locking mechanism comprises: a moving locking member mounted in the door so as to be ascended/descended; a door latch mounted in the door, and having a holding mode in which the moving locking member is descended to be held thereto and a holding release mode in which the moving locking member is ascended by releasing the holding of the moving locking member to the door latch; and a locking member holder having a holding groove portion formed therein, wherein the moving locking member is inserted into the holding groove portion and held to the door latch when the door is rotated to the acute opening angle. a moving locking member mounted in the door so as to be ascended/descended; a door latch mounted in the door, and having a holding mode in which the moving locking member is descended to be held thereto and a holding release mode in which the moving locking member is ascended by releasing the holding of the moving locking member to the door latch; and a locking member holder having a holding groove portion formed therein, wherein the moving locking member is inserted into the holding groove portion and held to the door latch when the door is rotated to the acute opening angle.