A dual-bearing reel spool-braking device configured to brake a spool rotatably attached to a reel body having first and second side plates has a tubular brake member, a moving member, and a cover member. The tubular brake member is attached to the first or second side plate, and has a base and an opening. The brake member is disposed such that the opening is opposed to the spool. The moving member is axially non-movably attached to a rotation shaft of the spool, and contacts an inner peripheral surface of the brake member when the moving member is moved towards the brake member by centrifugal force generated by rotation of the spool. The cover member is attached to the first or second side plate to cover the opening of the brake member.對於雙軸承捲線器的捲筒制動裝置,可確保穩定的捲筒制動力。離心制動器機構(23),具備:使與捲筒(12)相面對側開口的方式被配置的有底筒狀的制動器殼(65)、及被固定於制動器殼(65)的內周面的制動構件(68)、及被同芯配置於制動構件(68)的內周側且固定於被捲筒軸(16)的旋轉構件(66)、及朝徑方向可移動自如地裝設於旋轉構件(66)的6個移動構件(67)、及將制動器殼(65)及制動構件(68)的開口部(68b)閉塞的方式被安裝於第1側板(5a)的蓋構件(90)。蓋構件(90),是在制動器殼(65)及制動構件(68)的端面(68c)、及第1側板(5a)的段差部(5e)的不與捲筒(12)相面對側的端面之間,將制動器殼(65)及制動構件(68)的開口部(68b)閉塞的方式被挾持。5a...第1側板5c...第1開口部5d...第2開口部5e...段差部6a...第1側蓋12...捲筒12a...凸緣部12b...捲線胴部12c...轂部15...均勻捲線機構16...捲筒軸23...離心制動器機構24b...軸承25...公螺紋部26...母螺紋部33...開口34...擺動機構36...鎖定機構37...操作部37a...操作部本體37b...操作調整鈕38...鎖定構件44...彈簧51...摩擦托板65...制動器殼65a...軸承收納部66...旋轉構件66a...固定部66b...圓筒部66c...突出部67...移動構件67a...本體部67b...鍔部68...制動構件68a...制動面68b...開口部68c...端面90...蓋構件90a...貫通孔90b...底部90c...傾斜部90d...耳部90e...開口部