The present invention provides a pet water dispenser outlet pipe having a water stop structure, which mainly comprises: an outlet pipe disposed at the bottom of a pet drinker and including a guiding torus and a concave ring groove, the guiding torus And the concave ring groove is respectively disposed on the inner wall surface of the water outlet pipe, and the concave ring groove is disposed between the outlet pipe mouth and the guiding ring surface； a ball is movably received in the water outlet pipe, and the ball The ball system may partially protrude from the nozzle of the water outlet pipe； a water stop washer is disposed in the concave ring groove, the inner edge of the water stop washer protrudes inwardly from the concave ring groove； and an inner annular flange, Provided on the inner edge of the water stop washer, the ball selectively abuts against the water stop washer and the inner annular flange, thereby closing the water outlet pipe to be in a water stop state.本創作係提供一種具有止水結構之寵物飲水器出水管，其主要包括：一出水管，設於一寵物飲水器底部，並包括一導動環面及一凹環槽，該導動環面及凹環槽分別設於該出水管內壁面，並且凹環槽介於該出水管管口與該導動環面之間； 一滾珠，係可活動地容設於該出水管內，並且該滾珠係可局部突出於該出水管的管口；一止水墊圈，設於該凹環槽中，該止水墊圈之內側緣得往內突出於該凹環槽；以及一內環形凸緣，設於該止水墊圈內側緣，而該滾珠選擇性地抵靠於該止水墊圈及該內環形凸緣，藉此封閉該出水管而呈止水狀態。
