Bentonite、Sepiolite、Fly Ash and Diatomite were modification by DATB, and the structure of the sorbent were investigated by TG、XRD and IR. The effects of time、pH、amount of adsorbent and other factors were studied ,based on the adsorbent effect of treatment of oil wastewater. It is indicated that under the best experimental condition, the removal rate of COD, oil, ammonia nitrogen and volatile phenol may separately reach 86.79%, 92.33%, 78.64%, 87.05%; The pollutant adsorption conforms to Freundlich or the Langmuir adsorption isotherm.