A fishing reel with single-handedly assembled and disassembled rocker arm assembly, comprising a fishing reel main body, a main body cover, a winding reel, a transmission device and a rotor, wherein said transmission device comprises a gear plate and a rocker arm assembly, which is inserted into a central axle hole of said gear plate; said rocker arm assembly comprises a rocker arm hexagon core, a rocker arm sleeve, a rocker arm and a handle; said rocker arm hexagon core is inserted into said rocker arm sleeve, which is connected with one end of said rocker arm, and the other end of said rocker arm is flexibly connected with said handle; wherein said rocker arm assembly also includes a control lever, at least two stop blocks, a ring spring and a tightening knob, wherein: the axis of said rocker arm hexagon core is provided with a through-hole of the hexagonal core, which is concentric with the axis through-hole of said rocker arm sleeve; one end of said rocker arm hexagon core is tapped with an internal thread, and the external surface of such end as tapped with the internal thread is provided with a circular groove, which is provided with at least two equally distributed locking through-holes; said ring spring is connected with said circular groove; the at least two stop blocks are connected with at least two locking through-holes; said ring spring is connected with at least two stop blocks; said control lever is inserted into a through-hole 426 of the hexagonal core of said rocker arm hexagon core, and the external surface of the inserted end of said control lever is provided with a stop threads and a circular arc stop block; one end of said control lever keeping away from said stop thread is provided with an adjusting column, which is connected with said tightening knob; whereby when said tightening knob is rotated, the stop thread can be engaged with the internal thread to make said control lever face toward the internal thread of said rocker arm hexagon core, the slope of said circular arc stop block pushes said stop block outwards, and said stop block protrudes from the outer edge of said rocker arm hexagon core and enters the circular axle hole groove of said gear plate so that the rocker arm assembly is in a non-removable state; said rocker arm hexagon core is inserted into a central axle hole of said gear plate, and the place at which the inner wall of the central axle hole of said gear plate corresponds to at least two stop blocks is provided with a circular axle hole groove. whereby when said tightening knob is rotated, the stop thread can be engaged with the internal thread to make said control lever face toward the internal thread of said rocker arm hexagon core, the slope of said circular arc stop block pushes said stop block outwards, and said stop block protrudes from the outer edge of said rocker arm hexagon core and enters the circular axle hole groove of said gear plate so that the rocker arm assembly is in a non-removable state; said rocker arm hexagon core is inserted into a central axle hole of said gear plate, and the place at which the inner wall of the central axle hole of said gear plate corresponds to at least two stop blocks is provided with a circular axle hole groove.