The utility model discloses an electric capacity deionization is the carbon aerogel electrode for the equipment: the electrode is range upon range of sandwich, from bottom to top in proper order by firstly separate stratum reticulare, a carbon aerogel layer, collection fluid layer, the 2nd carbon aerogel layer, the second septum stratum reticulare is range upon range of forms, closely sews up integratively through the stylolite. The utility model provides an electrode can adopt roll formula or plane formula mode to assemble, prepares into the CDI module. The utility model provides an it is good that the aerogel electrode has a wholeness, and mechanical strength is big, can curl, advantage that electric conductivity is strong. The electrode does not add the binder, has both avoided the jam of hole, can guarantee electric conductivity, specific capacitance and the blocking nature of aerogel again. The electrode is flexible electrode, therefore can make the electrode of multiple shape. This electrode can be used to prepare electric capacity and removes ion device for the desalination of water, perhaps harmful ionics such as aquatic heavy metal ion, hardness, fluorine ion are got rid of.