Water chlorination for disinfection purposes leads to the formation of haloacetic acids (HAAs). In this study, headspace solid-phase microextraction (HSSPME) was studied as a possible alternative to liquid-liquid extrmon for the analysis of HAAs in drinking water. The method involves direct derivatization of the acids to their methyl esters without methyl tert-butyl ether (MTBE) extraction. Experimental parameters such as 2㎝-50/30㎛ divinylbenzene/carboxen/polydimethylsiloxane fiber, sulphuric acid of 1㎖, methanol of 3ml, derivatization temperature of 50T, derivatization time of 2hrs, sodium chloride salt of 10g , extraction time of 30minutes, extraction temperature of 20℃ and desorption time of lminute at 260℃ were selected in optrmal experimental conditions for the analysis of haloacetic acids. The linearity (r²) for DCAA and TCAA is 0.9981 and 0.9997 when analyte concentration ranges from 1 to 4㎍/l, respectively. The relative standard deviations (%RSD) for DCAA and TCAA were 3.5 and 2.1% for concentration of 10㎍/l (n=5), respectively. The limits of detection (LOD) were 0.05 and 0.1㎍/l. The results of HAA2 from the survey of Seongnam drinking water samples showed that the highest concentration of HAA2 (DCAA + TCAA) were 30.04㎍/l which was well within the Korean drinking water quality standard of 100㎍/l. It can be concluded that HSSPME technique with direct derivatization has a great potential for the analysis of drinking water.