The invention relates to the technical field of manufacturing of bulk amorphous alloy, in particular to low-cost bulk amorphous alloy. The chemical formula of the low-cost bulk amorphous alloy is Zra(Hf,Ti)bAlc(CuxNiy)d(Ag,Re)e(Li,Na,K,Si,Mg,Ca)fOg, wherein a, b, c, d, e, f and g are the percentage contents of corresponding atoms of all the elements in the amorphous alloy, 45<=a<=70, 5<=b<=10, 3<=c<=15, 20<=d<=40, 0<=e<=3, 0<=f<=10, 0.05<=g<=1 0.2<=x/y<=5, 0.1<=e+f<=10, and Re is one or more of rare earth elements. According to the low-cost bulk amorphous alloy, the sensitivity of a formula to the oxygen content is greatly reduced, so that the large bulk amorphous alloy suitable for industrial application can still be formed under the high oxygen content condition.