The effects of low melting point elements Cu, Al and Ga on the magnetic properties of Ce₁₇Fe₇₈B₆ alloys prepared by melt spinning technique are studied. The addition of these elements decreases the saturation magnetization, while the coercivity increases to a certain extent. Among the additive elements, the addition of Cu and Ga optimize grain size distribution, Ga addition is the most effective way to improve the coercivity of Ce₁₇Fe₇₈B₆ alloy. The recoil loop of Ce₁₇Fe₇₈B₆ alloy is slightly open. The best overall magnetic properties are obtained for Ce₁₇Fe_77.25B₆Ga_0.75 alloy. Compared with the counterpart Ce-Fe-B alloy, the exchange coupling interaction between the grains of Ce-Fe-B-Ga alloy is enhanced. The recoil loops closes completely and the average recovery permeability decreases, which effectively enhances the resistance of Ce-Fe-B based alloys to external magnetic field interference.