Soil vapor extraction ( SVE) is a safe,economical and effective in-situate rehabilitating technology for soil
contaminated by organic chemicals. The system composition,principles,application range and cost of SVE technology are
introduced in this paper. The research progress on rehabilitating oil contaminated soil by SVE is reviewed. Then,major
influencing factors on remediation efficiency of SVE and three types of enhanced SVE technologies are discussed. In addition,
the existing problems and the research directions of SVE for future are analyzed.