Pipe body packer

The invention relates to a pipe body packer which comprises a central pipe, a first pipe body and a second pipe body. A first channel is defined in the central pipe, and an upper connector and a lower connector are arranged at the two ends of the central pipe. The sealing rubber sleeve is arranged on the outer side of the central pipe in a sleeving mode, the upper cone and the lower cone are arranged on the two sides of the sealing rubber sleeve respectively, and the sealing rubber sleeve can deform under pushing of the upper cone and the lower cone. The upper slip and the lower slip are respectively arranged on one sides, far away from the sealing rubber cylinder, of the upper cone and the lower cone; the push cylinder is connected to the side, close to the lower connector, of the lower slip through a first shear pin, the push cylinder comprises a cavity and a piston, the cavity is communicated with the first channel through a pressure transmission hole, the piston is arranged in the cavity, and the push cyl