The invention discloses a conjugate cam connecting rod combination packing mechanism. The motive power is transmitted to a conjugate cam which is consolidated with a cam shaft through the cam shaft which is in a hinged connection with a rack, the conjugate cam is connected with a swing rod cam pair, the conjugate cam pushes a swing rod to swing, and the movement of the swing rod is transmitted to a packing platform through a rod piece component. The uniform rotation of the cam shaft is changed to the movement of the packing platform by the conjugate cam connecting rod combination packing mechanism, by means of a contour design of the conjugate cam, the movement rule of the packing platform is controlled, so that the starting and finishing processes of a packing operation can be stable. Simultaneously, by means of the contour design of the cam, the stopping and pausing of the packing platform can be conveniently achieved during the moving process, the packing operation requirement can be flexibly met, the mechanism is compact in structure, the packing process requirement can be flexibly met, and the stopping and pausing functions can be achieved by a mechanical mode.