Model of large scale paddy fields, the most advanced model in rice production up to now, is a territorial organizational model in agricultural production that is more and more confirmed in the Mekong Delta and is spreading across the country. The most difficult steps of reorganizing agricultural production will be implemented easier and it is not necessary to concern about "land accumulation" or "land consolidation" in agriculture and rural development if this method is successful, as the inevitable trend of agricultural production of the country. Model of large scale paddy field is only at the stage of the model, so it must move from Model of large scale paddy fields to "large fields" with long-term vision and sustainability.