The invention discloses a water conservancy gate with canal garbage convenient to clean. The gate comprises a gantry frame, a limiting groove, a mounting seat, a rectangular groove, a reinforcing plate, a door body, a sundries cleaning device, a fixing seat, a connection block, an electric push rod, a mounting frame, a concave-shaped bearing frame, a control box and a power supply line. Accordingto the water conservancy gate with canal garbage convenient to clean, the sundries cleaning device is arranged on the rear side of the door body, a driving mechanism drives stirring paddles and a drainage mechanism to rotate, the drainage mechanism introduces water with floating objects into a box body, at the same time, the floating objects are collected into a collection groove under the slow rotation of the stirring paddles, so that the floating objects are collected in the collection groove, a U-shaped filter groove is pulled out through a pull plate during opening of the gate to clean thecollected objects, and the problems that the floating objects need to be fished out by manpower when the gate id opened, so that manpower waste is caused, and the floating objects need to be fished out manually, so that potential safety hazards exist to an operator are solved.