Abstract: In order to ensure the quality of analytical data of organic pollutants in groundwater contamination survey, a quality control method was developed according to "The specification of testing quality management for geological laboratories"(DZ/T 0130—2006). The article introduced some quality control measures in the process of sample pre-treatment and determination in details. And accordingly, the quality control procedure for analysis of organic pollutants in groundwater samples was established. The quality control system has been applied to the organic pollutant analysis in groundwater contamination survey with satisfactory results.