AquaCrop is a kind of new crop model developed by FAO in 2009. It is widely used in agricultural fields, because it need fewer parameters, and can provide users more simple interface, compared with other similar crop models. According to the principle and characteristics of the AquaCrop model, some further discussions were developed on the application of this model at domestic and abroad. Analysis shows that, the AquaCrop model has achieved remarkable results in irrigation strategy, scenario simulation under climate change and joint application with other models. However, at present, the model is not perfect enough, because of the following reasons. Firstly, the lack of verification of the conservative parameters of the model usually results in lower simulation accuracy. Secondly, the objective existence of spatial variability of soil, which is commonly suitable and helpful so much when applied at single experimental station, but when applied to larger area, some more stations and data are needed. Thirdly, less research on crop growth in rain-fed areas was conducted, and its non-conservative parameters are difficult to be obtained accurately. Finally, the physiological modules, nutrient modules and interaction modules of water and nutrient are not perfect, and the crop genetic varieties and pests are not included, which result in lower simulation accuracy under severe stress conditions. It is concluded that, when the model is applied, the conservative parameters should be modified by using many years' data of crop, and non-conservative modeling parameters should be corrected by combining multi-year data at a single site with multi-sites data in the experimental region. Currently, scholars and researches are supposed to strengthen the research in rain-fed areas, enlarge the scope of application of the model, and related designers should develop more sub-modules of AquaCrop model to increase the modeling accuracy and broaden its application scope.