Connecting structure for preventing leakage of municipal drainage pipeline

The utility model relates to a connecting structure for municipal drainage pipeline leakage prevention, which comprises a pipeline I, a pipeline II and a connecting piece, the end parts of the pipeline I and the pipeline II are respectively provided with internal threads, the connecting piece comprises a connecting plate, one side of the connecting plate is provided with an insert pipe I matched with one end part of the pipeline, and the insert pipe II is provided with an insert pipe II matched with the other end part of the pipeline. An anti-seepage ring is arranged on the side wall of the connecting plate on the outer side of the first insertion pipe, the inner wall of the anti-seepage ring is attached to the outer wall of the first pipeline, an anti-seepage hole penetrating through the connecting plate is formed in the position, located between the anti-seepage ring and the first pipeline, below the connecting plate, a round hole communicated with the anti-seepage hole is formed in the anti-seepage ring, a