This paper presents a new way of designing bulk metallic glasses in Cu–Ti–Zr–Ni system based upon binary deep eutectic. By conventional copper mold casting method, these alloys can be quenched into single amorphous structure with the diameter ranging from 3 to 5mm. Experimental results show that among the alloy series designed Cu 52.55 Ti 30.05 Zr 11.4 Ni 6 and Cu 53.1 Ti 31.4 Zr 9.5 Ni 6 possess the relatively higher T rg of 0.603 and 0.598, respectively, which contribute to their good glass forming ability, and Cu 52.55 Ti 30.05 Zr 11.4 Ni 6 exhibits a relatively higher T g (694K) and ΔT x (52K), which indicate its good thermal stability.