Capacitive deionization(CDI) process kinds of electrochemical adsorption method was employed in order to solve the water deficient problems. In our study, porous activated carbon-silica gel composite electrodes with high wet-ability and mechanical strengths are invented by paste rolling method in our laboratory and investigated electrochemical characteristics such as current changed values as a function of time, coulombs, specific coulombs and chargedischarge efficiencies as a function of cycles until 10^th and 100^th cycles in 1,000 ppm NaCl solution. Porous activated carbon-silica gel composite electrodes showed efficient CDI performances with decreasing active material usages and increasing wet-ability, mechanical strengths in NaCl solutions. In our electrochemical runs, all of the activated carbonsilica gel composite electrodes also showed good cyclic-ability without destroy of active materials during cycles. The electrode-manufacturing times decreased by 50%. Average specific charge-coulombs by 100^th cycles are also appeared very higher 0.456(C composite electrode) than 0.317 (A·min.)/g(A electrode). The charge-discharge efficiencies by 100^th cycles are showed good cycle-ability and appeared over 73% and 75.6% in case of A electrode and C composite electrode. However, at the 100^th cycles, 76% of charge-discharge efficiencies is showed in C composite electrode but 66% of charge-discharge efficiencies is showed in A electrode.