The invention relates to a chamber type reciprocating bale plucker which comprises a reciprocating walking stand column, an upper cotton suction outlet air pipe, a bale plucking head, a beating hand, side chamber plates and a Z-shaped support. The bale plucking head is connected to the reciprocating walking stand column through the Z-shaped support and is in a vertical lifting state, the two side chamber plates are arranged on one side of the reciprocating walking stand column in parallel in the reciprocating moving direction of the reciprocating walking stand column, the beating hand is arranged at the lower end of the bale plucking head and corresponds to a bale plucking area between the two side chamber plates, an inner side gap step of the Z-shaped support corresponds to the side chamber plate close to the reciprocating walking stand column in the vertical displacement space, and the upper cotton suction outlet air pipe is connected to the reciprocating walking stand column and corresponds to the bale plucking area between the two side chamber plates. The chamber type reciprocating bale plucker is simple in structure and capable of protecting the bale plucking area of the bale plucker, completely eradicating flying of raw materials, and reducing mechanical accidents and personal safety accidents.