Multi-stage protection slope for water conservancy channel

The utility model relates to the technical field of bank slope protection, in particular to a multistage protection slope of a water conservancy channel. The device comprises blocking bodies, the multiple blocking bodies are fixedly connected together through fixing devices on the two sides, each blocking body is provided with a plurality of cavities used for containing viewing flowers, the blocking bodies on the two sides are communicated through a communicating cavity and a precipitation tank, a cleaning device is arranged at the upper end of the precipitation tank, and a plurality of filter screens are arranged at the bottoms of cross rods at the ends of the blocking bodies. When the rainfall is large, the rotating disc is rotated to drive the push rod and the baffle to move upwards, the baffle is lifted to a certain height, rainwater is discharged from the two sides of the baffle, when the rainfall is small, the vegetation absorbs the rainwater, redundant rainwater drives the fan blades to rotate, and the