Abstract: The adsorption properties of xenon in coconut base activated charcoal were researched by means of gas chromatography with plus injection. The relationships between the adsorption coefficient of Xe and adsorptive temperature, flow rate and concentration of xenon were obtained. Adsorption coefficient of Xe decreases by 3% due to the reduction of temperature by every 1 ℃ when temperature lies in the range of 20-50 ℃, while the coefficient is remained independent of the various flow rates from 5 cm/s to 10 cm/s. When the concentration of Xe in the gas flow is under 10^-3 mL/mL, the coefficient remains independent of the concentration of Xe.