The treatment of geothermal water containing trace phenol with refined coconut shell activated carbon was studied in this paper. The important factors such as dosage of activated carbon, pH value, adsorption time and initial concentration of phenol have been systematically examined through the static experiment, and the optimum condition of adsorption was determined as follows: dosage of activated carbon was 6g/L, optimum pH was 6.5，adsorption time was 6 h，initial concentration of phenol was 0.5 mg/L；according to these factors, the dynamic experiment was done. Study on the adsorption fundamentals from the aspects of kinetics, the adsorption kinetics showed better agreement with pseudo-second-order kinetic model. In order to get the adsorption breakthrough curve model of phenol on activated carbon fixed bed, the experimental data of dynamic experiment was dealt with origin software, and this model is useful for the process design of phenol' adsorption.