A　two-dimensional　finite　element　method　(FEM)　was　used　in　the　simulation　of　groove　pressing　(GP)　of　H62　brass.　Groove　pressing　experiments　were　conducted　according　to　the　FEM　model.　The　relationship　between　the　distribution　of　the　equivalent　strain　and　the　structure　and　mechanical　characteristics　of　the　sample　was　analyzed.　It　is　found　that　the　equivalent　strain　increases　as　the　increasing　of　the　groove　pressing　cycles.　The　speed　of　the　equivalent　strain　accumulated　is　almost　constant,　and　the　speed　on　the　sample　surface　is　higher　than　that　of　the　center.　The　equivalent　strain　value　is　lower　than　that　of　the　theoretical　value.　Proceed　by　the　groove　pressing,　the　grain　of　H62　brass　is　refined　and　the　microhardness　is　increased.　So　the　distribution　of　the　equivalent　strain　has　relation　to　the　structure　and　mechanical　characteristics　of　the　sample.