The utility model discloses a rotary connector for steering wheel multifunctional key and steering wheel vibration, and aims to achieve the purposes of being stable in structure and capable of meetingthe requirements of multiple paths and large current at the same time. The device comprises an upper cover, a base, an inner ring, a locking piece, a support frame, a roller and a flat cable, the upper cover and the base are connected through clamping hooks to form a stator part, and the inner ring and the locking piece are connected through clamping hooks to form a rotor part. The support frameis provided with support frame openings for the plurality of flat cables to pass through. The roller is rotatably arranged on the support frame, one end of each flat cable is fixed on the inner ring,the other end of each flat cable is fixed on the upper cover, and the plurality of flat cables have the same winding direction on the rotor and the stator and sequentially pass through the plurality of openings on the support frame; the flat cables comprise two types, one type is a small-current cable which is internally provided with a plurality of narrow copper strips and used for transmitting multifunctional keys of the steering wheel, and the other type is a large-current cable which is internally provided with a single wide copper strip and used for transmitting vibration of the steeringwheel.