Abstract: A rotate-to-retract type storing apparatus including a U-shaped protective casing, a shell body and a storing arrangement. A disk member is protrudes adjacent to an open side at the surface of protecting casing, and a protrusion member is provided at a partial position of the disk member. The shell body defines a receiving cavity and includes an insertion hole at a front end thereof for a second end portion of the storing arrangement to get into the receiving cavity and a retention hole penetrating a bottom surface of the shell body for coupling with the disk member so that the shell body is capable of rotating with respect to the protective casing and directing the coupling slot to rotate with respect to the protrusion member. This defines a moving distance—just enough for a first end portion of the storing arrangement to move between an application position and a retraction position. The result is a minimized size of the storing apparatus.