Abstract: Accurate prediction of agricultural irrigation water consumption is important to study the efficient utilization of agricultural water resources and optimize the allocation of water resources. This paper summarized the current situation of regional agricultural irrigation water consumption forecast based on the prediction methods of agricultural irrigation water consumption and the regional scale transformation, and pointed out the problems existing in the research. The results showed that: the forecasting models of irrigation water consumption were mainly based on crop water requirement mechanism, mathematical statistics and heuristic algorithm; the prediction methods had limitations, the research on regional scale transformation was less, and the influence factors had spatial and temporal variability. This study provides references for prediction of regional agricultural irrigation water consumption.