Electrocatalytic　oxidation　(ECO)　of　phenol　was　carried　out　using　a　self-made　anode,　TiZSnO2-Sb2O3-IrO2.　Preliminary　investigations　showed　that　only　a　small　fraction　of　phenol　was　oxidized　by　direct　electrolysis,　while　complete　degradation　of　phenol　was　achieved　by　indirect　electrocatalytic　oxidation　using　chloride　as　a　supporting　electrolyte.　Chlorophenols　and　formic　acid　were　the　intermediate　products　detected　in　the　process　of　ECO　phenol.　It　was　found　that　the　formation　of　chlorophenols　was　pronounced　at　the　beginning　of　electrolysis,　but　it　was　subsequently　oxidized　to　organic　acids　rapidly　by　extended　electrolysis.　©　2010　IEEE.