A sample analyzing apparatus using centrifugal force and inertia including a rotating body composed of a disk including upper and lower thin-films; a plurality of chambers composed of a polygonal space parts in the rotating body and including apertures on one side corner and a bottom side thereof; paths connected between the apertures of the chambers to transfer fluids mixed or separated in the chambers; sample inputting holes connected to the chambers formed inside of the rotating body through the paths; and balls moving within the chambers.