A fishing reel is provided, which includes: a frame having a through hole and a mounting part; a spool rotatably disposed inside of the frame with a fishing line wound thereon; a main shaft inserted into the spool; a brake unit mounted on the spool to put the brake thereon; and a cover unit disposed on the brake unit. The brake unit includes: a retainer having a fixing groove and a plurality of first guide grooves; a brake shoe housing fixed to the retainer and has a plurality of slots, a plurality of second guide grooves, and a plurality of mounting grooves; brake shoes mounted in the plurality of slots so as to be inserted into the slots or withdrawn therefrom; and pivot members mounted in the mounting grooves to press the brake shoes.