In this study, a new method is suggested to improve the cold start characteristics of FCVs (Fuel Cell Vehicles). To avoid freezing, the moisture is removed from the fuel cell system by using an adsorbent as soon as an FCV is fumed off. Experiments have been performed to verify this concept and evaluate the efficiency of water removal and regeneration characteristics. In the moisture removal phase, the time required to remove the water droplets from the solenoid valve was measured for various operation conditions. In the regeneration phase, the time for the regeneration was measured and the overall performance was evaluated in detail.