A centrifugal brake device capable of preventing backlash of a bait cast reel by using the centrifugal force generated from a spool is disclosed. The centrifugal brake device includes a shoe housing engaged to one side of a spool and including a plurality of brake shoes disposed in a radial direction, a stopper positioned on an upper portion of the shoe housing to restrict the brake shoes, a stopper controller engaged to an upper portion of the stopper to control a lifting position of the stopper, a spool cover enclosing the shoe housing and including a brake ring engaged to an inner surface of the spool cover, the brake shoes coming into contact with the brake ring when the brake shoes are released from the stopper, a slide cam engaged to one side of the spool cover to control a lifting position of the stopper controller, with a spring being interposed between the slide cam and the spool cover, and an adjustment dial for gradually adjusting a lifting degree of the slide cam, the adjustment dial being provided with displacement portions on a surface thereof contacting the slide cam.