Abstract: A portable disk player comprises: a base unit (1) defining a disk driven device and a disk read processing device therein, said base unit forming a mounting base (12) on a bottom cover (10) thereof, said mounting base including a protrusion (16); a display (2) being pivotally connected with one side of said base unit; and a connecting hinge (3) connecting said base unit with said display and including a horizontal tube (32) extending horizontally, a longitudinal tube (34) extending longitudinally, said longitudinal tube including a projection (342); wherein when said connecting hinge is located in a first position, one side of said projection of said longitudinal tube resists against one side of said protrusion of said mounting base, and when said connecting hinge is located in a second position, the other side of said projection of the longitudinal tube resists against the other side of said protrusion of said mounting base.