Soil erosion is an interaction of multi factors including wind, vegetation, soil characteristics, land use, precipitation, micro-geomorphology and so on. It is a continuous dynamic process occurring on airflow-soil interface in the specific geographical locations. Soil erosion empirical model, based on statistic theory, is difficult to avoid overlap of some factors affecting soil wind erosion between sub-models and not enable sub-models to be strictly independent from each other, thereby leading to lack of theoretical basis for modeling. Such empirical model is also not able to objectively reflect dynamic process of soil erosion. On the basis of clarifying basic concepts of soil erosion and analyzing the global research background and inadequacy, we proposed a new theoretical framework for soil erosion models based on wind erosion dynamics theory and the classification as well as representation of factors affecting soil wind erosion under the framework. We also elaborated the rationality of both the framework and the classification as well as the representation of factors affecting soil wind erosion, and further explored the research approaches on the latter.