Abstract: Disclosed is an ion exchange membrane electrolytic cell, comprising an anode chamber and a cathode chamber; a gas-liquid separation chamber is arranged in the anode chamber and/or the cathode chamber; the gas-liquid separation chamber is partially located inside the anode chamber and/or the cathode chamber; a first portion of the gas-liquid separation chamber, which is configured to accommodate liquid, is arranged inside the anode chamber and/or the cathode chamber; and a second portion of the gas-liquid separation chamber, which is configured to accommodate gas, is disposed outside of the anode chamber and/or the cathode chamber. The ion exchange membrane electrolytic cell is provided with the gas-liquid separation chamber partially located inside the anode chamber and/or the cathode chamber, thereby improving the yield of the ion exchange membrane electrolytic cell. On the other hand, the products of electrolysis can be drained rapidly.