Woven and nonwoven geotextiles and geotextile composites were used to examine engineering property improvement by plasma surface treatment. Hydrophobic and hydrophilic plasma treatment were applied to these geotextile samples with plasma gas, electric power, plasma treatment time and gas flow rate. It is seen that tensile strength of geotextile samples increased after plasma treatment, but chemical resistance had not significantly changed. Finally, long-term performance of plasma treated geotextiles was reviewed through application of Arrehenius equation as an accelerated analysis.