A braking device for a dual-bearing reel for braking a spool rotatably mounted on a reel body, includes a spool brake and a spool controller. The spool brake is configured to brake the spool by electromagnetic induction during casting of a fishing line. The spool controller is configured to control a braking force of the spool brake by controlling an ON/OF-state of current that is generated due to the electromagnetic induction at a prescribed period. The spool controller has a period changer configured to change the prescribed period for braking the spool.
