NOVELTY - An ion-removing apparatus comprises housing (10) on cooling water flowing line of fuel cell stack to form channel through which cooling water passes; anion and cation permeable membranes (11, 12), each being respectively mounted on both sides of cooling water channel to allow cations and anions contained in cooling water selectively to pass through; concentrate capturing units (13ab) respectively to capture anions and cations having passed through the permeable membranes; electrodes (14); controller for controlling the electrodes; and power source.    USE - Apparatus for removing ions contained in cooling water of fuel cell vehicle (claimed).    ADVANTAGE - The apparatus can reduce electric power consumption in pump and can modify overall performance of the system to cope with various environmental conditions.    DETAILED DESCRIPTION - Ion-removing apparatus for removing ions contained in cooling water of fuel cell vehicle comprises housing (10) on cooling water flowing line of fuel cell stack to form channel through which cooling water passes; anion and cation permeable membranes (11, 12), each being respectively mounted on both sides of cooling water channel to allow cations and anions contained in cooling water selectively to pass through; concentrate capturing units (13ab) respectively disposed at each rear side of the anion and cation permeable membranes to capture anions and cations having passed through the permeable membranes; greater than or equal to 2 electrodes (14) at each rear side of the concentrate capturing units to attract anions and cations contained in cooling water, respectively; controller for controlling the electrodes; and power source for applying electric power.    DESCRIPTION OF DRAWING(S) - The drawing is a cross-sectional view showing an operation state of electrodialysis type of ion removing apparatus.    Housing (10)    Permeable membranes (11, 12)    Concentrate capturing units (13ab)    Electrodes (14)    Valve (18)    Discharge line (19)