The invention relates to an uncoupling rod anti-bouncer of a rail car. The uncoupling rod anti-bouncer of the rail car comprises an uncoupling rod, an uncoupling rod base and an anti-bounce stopper, wherein the anti-bounce stopper is connected with the uncoupling rod base in a rotary mode, a key-shaped through hole is formed in the uncoupling rod base, a clamping groove is formed in the lower portion of the through hole, and is used for preventing rotation of the uncoupling rod, a rotation hole is formed in the upper portion of the through hole, and is used for allowing the uncoupling rod to rotate, a clamping portion which is matched with the clamping groove in shape is arranged on the uncoupling rod, the anti-bounce stopper is composed of a baffle and a stopping vertical plate, the baffle is used for carrying out perpendicular limitation, the stopping vertical plate is used for carrying out horizontal limitation, the stopping vertical plate is attached to the side portion of the uncoupling rod, and the bottom of the baffle abuts against the top end of the uncoupling rod. The uncoupling rod anti-bouncer of the rail car is simple in integral structure, safe and reliable in use, quite convenient to assemble and disassemble, easy to operate and rapid in operation, switching between the closing state and the opening state can be rapidly achieved, and the cost is low.