Abstract: An experiment of a newly developed cermet used as inert anode for aluminium electrolysis was conducted in cryolite-based molten salt as electrolyte with cryolite mole ratio 2.8 and saturated alumina concentration for 7 h at 960°C, in which the direct current was set to 100 A with an anodic current density 1.0 A/cm². The results showed that this cermet anode has high resistance to thermal shock, oxidation and corrosion of the molten salt. e. g., the annual corrosion rate is 24 mm, and the purity of aluminium is up to 98%. The back electromotive force is 2.2 V at 960°C as detected by aluminium reference electrode and the evolved anodic gas contains 98%-100% oxygen as analyzed by apparatus.