In this study, GSTs gene homology fragment from Mongolian wheatgrass(Agropyron mongolicum Keng) was isolated using homology-based method. one partials gene sequences have been obtained by reverse transcription polymerase chain reaction (RT-PCR). Sequence analysis using Software of DNAman and DNAuser etc, and showed that the cDNA sequences was 344 base pairs, encoding 62 amino acids. The partial gene had C-terminal conserved domains of substrate binding pocket (H-site) of GSTs superfamily. Homology comparison with GSTs gene amino acid sequences in other plants showed that it was 91% identical to 19E50 of wheat, 90% to pk0078 and 88% to gstf6. It was named as MwGSTs.