A double bearing type fishing reel has a reel body including a frame with a rod attachment portion, and a pair of side plates disposed to face the frame. The reel also has a spool supported rotatably between the side plates, and a winding drive mechanism for rotating the spool. A removal prevention member is engaged with a peripheral portion of a projecting portion projecting from a surface of that side plate, which is provided on the side where the winding drive mechanism is provided. Thereby, this side plate is prevented from being removed from the frame.