By taking the loess in Mangling District,Shaanxi Province as a research object,a direct shear creep test is conducted to obtain the char acteristic creep curve and parameters of intact loess under different water contents and analyze the influences of water content and shear stress on creep characteristics. Results indicate that at a given water content,shear stress obviously influences the creep characteristics. The higher shear stress, the greater creep strain of loess. At a given shear stress, water content obviously influences the creep charactristics. The higher water content,the bigger creep strain. According to the typical behavior of creep curve,a creep constitutive model and characteristic parameters are obtained by fitting test data. The model better simulates the creep characteristics of intact loess in Mangling District by model test.