In order to understand milling forces properties of amorphous alloys, characteristics of milling forces and influence by milling parameters are studied by orthogonal experiment with samples contrast of Zrbased bulk amorphous alloys（Vit1 BMG）and 45 steels. The force empirical formula of milling force was established by using linear regression method under the experimental conditions. Experimental results show that there is the maximum amorphous alloys milling force in Yaxis, minimum in Xaxis, and milling force in Yaxis is affected easily by changes in milling parameters, followed in Xaxis and almost null in Zaxis. Axial depth and radial depth of cutting have impact on the milling force obviously, and very small effect on feed rate and cutting speed.