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Magneli phase electrode is a potential anode for sewage electrochemical degradation due to its high conductivity and wide electrochemical window. However, few works was done to evaluate the performance of the Magneli phase electrode. In this work, the Magneli phase electrode was prepared by plasma spray methods and examined by accelerating life methods. The result shows that the accelerating life cycle of the Magneli phase electrode is about 320 h. The life cycle of Magneli phase electrode can be extended to 420h by alternating the current direction. The failing reason of the Magneli phase electrode is the exfoliation of the coating, which makes the Ti substrate contact with the solution. Then the passivation the the Ti substrate leads to resistance increasing, consequently increasing of cell voltage.