Abstract: Using rice husk ash as absorbent to remove organic pollutant was studied in this paper to solve the problem of the residue after power generation using rice husk. It is indicated that rice husk ash treated by alkaline cleaning was effective in removing organic pollutants. When the pH value of solution was less than 7.0, the removal effectiency of organic was better than the pH value greater than 7.0. It was proved in this study that the rice husk ash could be used as adsorbent to remove organic pollutant.