Cu-35Zn　alloy　deformed　by　constrained　groove　pressing　(CGP)　up　to　10　passes　and　30%　cold　rolling　was　annealed　at　different　temperatures.　The　thermal　stability　of　Cu-35Zn　processed　by　CGP　and　cold　rolling　was　studied.　The　results　show　that　the　grains　of　Cu-35Zn　alloy　are　refined　by　CGP　and　cold　rolling.　After　the　deformation　of　CGP　and　cold　rolling,　the　hardness　and　strength　of　the　samples　are　improved.　The　recovery　process　of　specimens　deformed　by　CGP　and　cold　rolling　is　dominants　when　annealing　below　200　.　The　crystallites　with　large　angle　grain　boundary　are　formed　at　220　.　The　recrystallization　and　grain　growth　are　completed　at　300-400　.