Abstract: Based on the twophase flow theory, a new method of two-equation model for numerical simulation on snow drifting is proposed according to the movement mechanism of snow drifting. In the saltation equation, the source item is considered to be associated with the friction velocity and threshold of friction velocity, and an undetermined coefficient is introduced to scale the source item. Then a series of computational test with different parameters for wind velocity and property of snow layer is conducted, and the results of snow concentration in saltation layer, which are obtained from the computational test, are compared with those calculated through empirical formula to determine the value of this undetermined coefficient. Snow drifting in open area is simulated using the two-equation model method, and the results are compared with results from the field tests. The comparisons show that the simulation results from the two-equation model method agree with them, which indicates that the present method can reproduce the important characteristics of windinduced snow drifting movement. The mass concentrations in saltation layer obtained from twoequation model method are consistent with those from the field tests, whereas the results of mass concentrations in suspension layer are higher when compared with data from the field tests. The total mass transport rate still falls within the range of the field tests results.