Abstract: The nanoindentation creep behaviors of Mg61Cu28Gd11 and (Mg61Cu28Gd11)99.5Cd0.5 bulk amorphous alloys after adding tiny Cd at room temperature were studied by means of nanoindentation. Their creep mechanisms were analyzed by creep displacement, creep rate sensitivity index and creep compliance. The results show that the amorphous alloys had lower room temperature creep sensitivity index and their room temperature mechanisms were main local shear flow. The amorphous alloy after adding tiny Cd exhibited higher hardness and elastic modulus, lower creep rate sensitivity index and smaller creep compliance, better creep resistance and lower stress relaxation.