Drainage pipeline applied to sponge city and construction method thereof

The invention relates to a drainage pipeline applied to a sponge city and a construction method thereof.The drainage pipeline comprises a plurality of pipe bodies arranged in sequence, a bearing pipe is fixedly installed at one end of each pipe body, an insertion pipe is fixedly installed at the other end of each pipe body, the outer diameter of the insertion pipe is smaller than the inner diameter of the bearing pipe, and the insertion pipe is sleeved with a sealing ring; the inserting pipe of one pipe body is inserted into the bearing pipe of the other pipe body, the sealing ring tightly abuts against the outer wall of the inserting pipe and the inner wall of the bearing pipe, a plurality of first pouring openings are formed in the side, away from the pipe bodies, of the inserting pipe, and a plurality of second pouring openings are formed in the portion, located on the side, close to the pipe bodies, of the sealing ring, of the inserting pipe. The first pouring openings and the second pouring openings are