Binding device

The invention discloses a bundling device which comprises a clamping piece, a bundling wire conveying device, a rotating piece, a rotating driving piece and a moving driving piece. The clamping piece is provided with a clamping opening, a feeding opening and a discharging opening, and a guide rail is arranged on the inner circumference of the clamping opening so that binding wires can form a binding space. The binding wire conveying device is provided with a feeding channel for supplying binding wires; the rotating part is provided with a fixed part and a movable part, the movable part can move between a first position and a second position, in the first position, the movable part and the fixed part jointly define a material passing channel and a material discharging channel, and in the second position, the material passing channel and the material discharging channel are closed; the rotary driving part is provided with a rotating shaft, the rotating shaft can move between a third position and a fourth positi