To efficiently remove organics in coking wastewater, this paper prepared an amphiphilic chitosan?loaded bentonite adsorbent (C18CS?BT).The structure and morphology of the adsorbent were characterized by Fourier transform infrared spectroscopy (FT?IR),X?ray diffraction,and scanning electron microscope.By comparing the removal rates of C18CS?BT,unmodified chitosan?loaded bentonite (CS?BT),and bentonite (BT),the study explored the effect mechanism of hydrophobic modified adsorbent on the removal of the organics in coking wastewater.The results show that compared with BT and CS?BT,C18CS?BT features lower dosage, wider application range of pH value,and shorter adsorption equilibrium time.The optimized treatment process is the adsorbent dosage of 1.5 g/L,the adsorption time of 60 min,and the system pH value of 7.0. The COD in coking wastewater after BT, CS?BT and C18CS?BT treatment is reduced from 342 mg/L to 264,218,146 mg/L, and the corresponding removal rates of organics are 22.81%,36.26% and 57.31%, respectively. GC?MS result analysis also confirms that C18CS?BT could remove most of the organics in coking wastewater, especially long?chain alkanes and their derivatives.The hydrophobic modification of the adsorbent can effectively improve the removal performance of organics in coking wastewater.