[Objective] An optimal remediation technique for industrial contaminated sites was studied in order to provide a reliable approach for selection of remediation techniques in similar contaminated sites and engineering applications.[Methods] Taking an industrial contaminated site in Quanzhou City

Fujian Province as a case study

the matrix of the remediation technique selection was created according to its management plan and location. The combination of AHP(analytic hierarchy process) and TOPSIS(technique for order preference by similarity to ideal solution) was applied to build a remediation technique selection index system.[Results] This technique was verified with the actual screening outcome. The matrix that based on its location and management plan meets the actual needs easily. In addition

the application of both AHP and TOPSIS can not only overcome the issues of subjectivity of AHP in analyzing hard-to-quantify indices

but also avoid the shortcomings of TOPSIS that neglects index weights.[Conclusion] The application that combined the AHP with TOPSIS together could be effective in the selection of optimal remediation techniques for contaminated sites.