An exemplary rotatable positioning structure includes a first element and a second element. The first element includes a positioning track portion and defining a hole therein. The second element includes a pivot shaft engaging in the hole. The pivot shaft includes a through hole defined therethrough, a restriction portion and a positioning portion. The first element is restricted by the restriction portion of the pivot shaft. The positioning portion and the positioning track portion are capable of making the first element and the second element maintain a fixed position after relatively rotation therebetween.