Abstract: This paper briefly describes the structure and performance of a special bipolar filter press -type chlorate cell. The cathode is oxygen diffusion electrode, which replaces the current iron cathode, and air acts as de - polarizer. When the cell is operated at the 100 mA/cm2current density, the average single cell voltage is between 2. 000 and 2. 200V. The current efficiency can reach 90 ± 2% with the absence of Na2Cr2O7 in electrolyte. The D. C. consumption is 3700±100kW · h/t NaClO3. The cell can be operated steadily.