The invention discloses a packaging device for diaper production. The packaging device comprises a long plate, wherein vertical plates are fixedly connected to the left side and the right side of the top of the long plate, the tops of the vertical plates are fixedly connected with the left side and the right side of the bottom of a transverse plate, the top of the long plate is fixedly connected with a heating plate located below the long plate, and a lifting device is arranged above the long plate. According to the packaging device for diaper production, by means of the cooperation of a bottom plate, the long plate, the transverse plate, the vertical plates, the heating plate, round rods and the lifting device, a motor drives a worm to rotate, the worm drives a worm wheel to rotate, the worm wheel drives a grooved wheel on the left side to rotate, the grooved wheel drives a wire wheel to rotate, the wire wheel enables a steel wire rope to extend, and springs drive a straight plate to move downwards, the straight plate drives the heating plate on the upper portion to move downwards, then packaging of diapers is achieved, the automation degree is high, the labor is saved, and the working efficiency is improved; and an electric push rod drives a rack to move leftwards and rightwards, then second bent rods can be rotated, then sliding blocks can drive clamping plates to move leftwards and rightwards, and then fixing of the diapers is achieved.