gas absorption is gas-liquid extraction by liquid is used for absorp the desire gas from mix gas . The desire gas is apply to another process or purge. The principle of gas absorption is driving force of component in the mix gas between liquid phase and gas phase. Driving force is the cause of mass transfer between liquid phase and gas phase. In experiment , we used liquid-water for absorp Carbon Dioxide Gas from Carbon Dioxide-Air mix gas . We analyzed the effect for efficiency of absober when we vary the flow rate of liquid-water or the type of packing . We found that when we use high flow rate of liquid-water , the efficiency of absorber is high too because the high flow rate of liquid-water is increase the driving force of gas absorption . For the effect of the type of packing between Raschig Ring and Intalox Saddle , we found that Intalox Saddle is better because the many area of absorption.