Abstract: Based on the analysis on occurrence form of chlorides in naphtha, the removal of chlorides from naphtha was investigated by means of adsorption method. The results indicated that N type and P type of adsorbents made in the laboratory had higher adsorptive dechlorination performance, and the dechlorination performance for new adsorbent with m(N):m(P)=2:1 preferred than that of single N or P. Under proper operational conditions, such as the adsorptive time was 2h, the adsorptive temperature was 10℃, and the ratio of adsorbent to oil was 1:10, the content of chlorine element could be brought down from 17.026mg/L to 1.652mg/L and the dechlorination rate was high to 90.03% in the presence of the adsorbents with particle size of 20-40 mesh and m(N):m(P)=2:1. Moreover, regenerative adsorbents via repeated adsorption-regeneration treatment possessed always excellent dechlorination performance, it is conducive to commercial application in the future.