Pipe fitting through-wall joint

The utility model relates to the technical field of pipe fitting wall penetration, in particular to a pipe fitting wall penetration node which comprises a rubber sealing piece, a flange plate and a plurality of columnar connecting pieces, a waterproof layer is attached to the water retaining side of a wall body, a first mounting hole is formed in the middle of the rubber sealing piece, and a second mounting hole is formed in the middle of the flange plate. The end part of the pipe body sequentially penetrates through the wall body, the waterproof layer, the first mounting hole and the second mounting hole; the columnar connecting pieces are arranged in the circumferential direction of the pipe body, the first ends of the columnar connecting pieces are fixedly connected with the wall, and the second ends of the columnar connecting pieces sequentially penetrate through the waterproof layer, the rubber sealing piece and the flange plate and are in threaded connection with nuts. Each nut drives the flange plate t