Abstract: Soil erodibility is the soil susceptibility to resist external forcing of erosion and transportation. It is the necessary factor for establishing soil loss equation and soil erosion model. Research on soil erodibility is one of the keys to understand the mechanism of soil erosion. Based on previous research achievement, this paper reviewed the progress of the soil erodibility research. The relevant concepts of soil erodibility include soil anti-scouribility and K-factor, etc. There are different types of soil erodibility, such as soil erodibility of water erosion, soil erodibility of wind erosion, soil erodibility of gravity erosion and soil erodibility of freezing thaw erosion. The evaluation index system of soil erodibility can be divided into two types. One is the evaluation index system based on the soil intrinsic properties and another is the evaluation index system based on external forcing. There are five types of methods that are commonly used to assess soil erodibility, including the measurement of soil physical and chemical properties, the instrumental measurement, the area measurement, the mathematical model and graphic method and the hydrodynamic model solving method. Soil erodibility has obvious spatial-temporal variation characteristics. Its influencing factors include soil property, climate, vegetation, terrain, land use, etc. In the future research of soil erodibility, more attention should be paid to the definition of soil erodibility, the standardization and unification of evaluation index system, the regional applicability of soil erodibility estimation models and the dynamic mechanism of soil erodibility.