Rainwater pipeline three-way well structure

The utility model discloses a three-way well structure of a rainwater pipeline, relates to the technical field of rainwater pipelines, solves the problems that a water pipe is easily blocked by sludge or leaves and is inconvenient to clean, and comprises a shell, a main groove body is arranged in the shell, and a notch is formed in the inner wall of one side of the main groove body. An auxiliary groove body is fixed in the notch, a first supporting block is fixed to the outer wall of the bottom of the auxiliary groove body, a supporting rod is fixed to the bottom of the first supporting block, a main water inlet pipe is fixed to the end, away from the notch, of the auxiliary groove body, and an auxiliary water inlet pipe is fixed to the top of the main water inlet pipe; and a filtering structure is arranged in the auxiliary water inlet pipe, and the main water inlet pipe penetrates through the side wall, close to the auxiliary tank body, of the shell. The auxiliary tank body is fixed through the notch formed