Abstract: The plan of materials selection for OCTG needs to be made based on consideration of both the technical requirements and the economic benefits. Techno-economic evaluation methods are described, and a simple techno-economic index system is established, and the index powers are presented. With the value evaluation method, a techno-economic analysis of the materials selection for OCTG of a certain oil field is conducted. The result of the analysis shows that Plan 1 is much better Plan 2, so it is effective and practical to apply the techno- economic evaluation method to OCTG material selection.