A brake device for a fishing reel has a first brake disk, a second brake disk and two abutting discs. The first brake disk has an outer side, a through hole and a friction face. The friction face is formed on the outer side of the first brake disk and is adapted to face a minor panel of a clutch of the fishing reel. The second brake disk parallels the first brake disk and has two sides, a through hole and two friction faces. The friction faces are respectively formed on the sides of the second brake disk and are adapted to face the minor panel and a major panel of the clutch. The abutting discs are mounted in the through hole of the second brake disk to respectively abut the panels of the clutch to enable the second brake disk to be mounted between the panels at intervals.
