Urban river water environment detection device

The invention discloses an urban river water environment detection device. The ship comprises a ship body, a first vertical plate and a second vertical plate are fixedly mounted on the inner wall of the top and the inner wall of the bottom of the ship body, a first hollow rod is fixedly mounted on the inner wall of the top of the ship body, and a second hollow rod is slidably mounted in the first hollow rod; the bottom end of the second hollow rod extends to the position below the ship body and is rotationally provided with a water taking tank, the water taking tank can be moved to the proper depth through mutual cooperation of the first hollow rod, the second hollow rod, a strip-shaped groove, a strip-shaped toothed plate, a driven gear and other components, and meanwhile through mutual cooperation of a crushing rod, an impeller, knife-shaped teeth and other components, sundries such as aquatic plants near the water taking tank can be cleaned, and the problem that an existing water environment detection devi