Abstract: A tambourine includes an annular frame which has a plurality of equidistant rectangular positioning holes formed therethrough, a plurality of flexible positioning plates respectively fitted in the positioning holes, and a plurality of positioning bars respectively extending through a plurality of jingle units. Each of the positioning holes is defined by two shorter hole walls and two longer hole walls which have two stop ribs projecting toward each other therefrom. Each of the positioning plates has two positioning ribs abutting against the corresponding longer hole wall and has two locking ribs abutting against the annular frame so as to retain the positioning plate on the annular frame. Each of the positioning plates has a jingle slot formed therethrough.