Human health and environmental risk assessment of soil and groundwater was undertaken for a typical organic chemical site in Jiangsu Province. The risk assessment was conducted using RBCA (Risk Based Corrective Action) model that was modified to fully comply with Chinese Technical Guidelines for Risk Assessment of Contaminated Sites (draft). It was found that, soil was contaminated, part of it presented risk or harm, the maximum values were 5.44×10-5 and 54 respectively. Groundwater contamination was relatively severe, six sampling points presented risk or harm, the greatest risk of 1,2-dichloroethane was 0.174, the greatest hazard quotient of chlorobenzene was 20 568. Remediation targets aimed at protecting water environment were relatively conservative than that of protecting human health. Therefore, we should pay attention that remediation that only aims at protecting human health may still have risk of water environment.