The utility model relates to a retaining arrangement structure for field alley belongs to agriculture rainwater collection technique field, and it includes and be equipped with the concave ridge of double row (2) in farmland planting district (1) in farmland planting district (1), on the ridge face on the concave ridge of double row (2) or the trough upper berth of two crests between and be equipped with I plastic film (3) of hugging closely its ridge body, on the ridge face on the concave ridge of double row (2) and the top of I plastic film (3) laid II plastic films (4) be formed with between I plastic film (3) and II plastic films (4) rainwater collection space (5), offered rainwater collection hole (6) on right II plastic films (4) in rainwater collection space (5) top. The utility model discloses can collect the storage with the rainwater when the rainfall, it is extravagant to avoid the rainwater to run off, the normal water requirement of crops when the guarantee arid takes place to solve the arid problem of dry farming farming region.