Trench cleaning device for farmland

The utility model belongs to the technical field of farmland ditches, and particularly relates to a farmland ditch cleaning device which comprises a ditch body, an intercepting net and an anti-blocking structure, the intercepting net is clamped in the ditch body, and the anti-blocking structure is arranged on the surface of the intercepting net; the anti-blocking structure comprises a bearing fixedly connected to the interior of the intercepting net, a connecting rod is arranged in the bearing in a sleeved mode, an impeller is fixedly connected to one end of the connecting rod, two evenly-distributed sweeping iron brushes are fixedly connected to the surface of the connecting rod, and the sweeping iron brushes are attached to the intercepting net. According to the farmland ditch cleaning device, rotating force can be generated by flushing the impeller through water flow, then the rotating force drives the sweeping iron brush to sweep the intercepting net, impurities accumulated and attached to the surface of