Water diversion and drainage device

The utility model relates to the technical field of farm irrigation, and discloses a water diversion and drainage device which comprises a sedimentation tank, and the top of the sedimentation tank is detachably connected with a first filter screen; one end of the first water pipe is connected with a water suction pump, the water suction end of the water suction pump is connected with a water suction pipe, and the water suction pipe is arranged in the sedimentation tank; the second water pipes are arranged on the surface of the first water pipe, and drainage grooves are formed between the adjacent second water pipes; one end of the drainage pipe is connected to the drainage tank, and the other end of the drainage pipe is communicated with the sedimentation tank. By arranging a sedimentation tank, a drainage groove and a drainage pipe, the remaining irrigation water can be collected, settled and reused; the sedimentation tank is close to a farmland relative to a pond and a river, water in the sedimentation tank