The residual of organochlorine pesticides in the environmental medium of Pearl River Delta (PRD) has attracted much attention in recent years. Thirty surface soil samples from the typical soil types of the PRD were selected to measure the contents of DDT and its metabolic compounds in this study. The objective was to determine the DDT residual in the soils at a regional scale and to assess the potential risk preliminarily. The results indicated that DDT can be detected in all typical soil types except for the littoral sandy soil. Total content of DDT in the soils ranged from 0.16μg/kg to 32.8μg/kg, and o,p'-DDT was the predominant compound among the four homolog. Trace amount of DDT was assumed to be sourced from the dicofol in this region. In addition, potential secondary poisoning of top predator might be caused by the low content of DDT of the soil in some sampling locations. Therefore, further researches are suggested to evaluate the probability of the risk.