Farmland drainage structure and farmland drainage system

The utility model relates to the technical field of high-standard farmland construction, in particular to a farmland drainage structure and a farmland drainage system. The farmland drainage structure comprises a plurality of water filter pipe assemblies which are sequentially connected and pre-buried below a farmland. Each water filter pipe assembly comprises a water filter pipeline and a filter layer assembly arranged on the outer side of the water filter pipeline in a sleeving mode, and water seepage holes penetrating through the inner space of the water filter pipeline are formed in the water filter pipeline. The farmland drainage system comprises the farmland drainage structure. According to the farmland drainage structure and the farmland drainage system, the water filter pipe assembly is buried in the agricultural ditch, the agricultural ditch and agricultural roads on the two sides can be backfilled to become cultivated land, the cultivated land area is increased by at least 10%, and economic benefits