Recrystallization　behavior　of　SPD　processed　high　purity　iron　was　studied.　The　99.95%　iron　sheet　was　deformed　by　the　accumulative　roll-bonding　(ARB)　process　up　to　8　cycles　(equivalent　strain　of　6.4)　at　ambient　temperature.　Subsequently,　the　ARB-processed　specimens　were　annealed　for　1.8ks　at　various　temperatures　from　300　degrees　C　to　500　degrees　C.　The　microstructures　of　these　specimens　were　characterized　by　TEM　and　SEM/EBSP.　The　microstructure　of　the　as-ARB-processed　specimens　showed　the　lamellar　boundary　structure　elongated　along　RD,　which　was　the　typical　microstructure　of　the　ARB-processed　materials.　The　mean　interval　of　the　lamellar　boundaries　was　about　100　nm.　After　annealing　at　400　degrees　C,　the　ARB　specimen　showed　a　partially　recrystallized　microstructure　composed　of　equiaxed　grains　with　grain　size　larger　than　10　mu　m　and　the　recovered　lamellar　boundary　structure.　After　annealing　above　500　degrees　C,　the　microstructures　were　filled　with　equiaxed　recrystallized　grains.　These　results　suggest　that　conventional　discontinuous　recrystallization　characterized　by　nucleation　and　growth　occurs　during　annealing　at　annealing　temperature　above　400　degrees　C.　In　previous　work　reported　about　the　annealing　behavior　of　the　low　carbon　IF　steel　ARB　processed,　the　continuous　recrystallization　occurred　during　annealing　at　annealing　temperature　above　600　degrees　C.　The　recrystallization　temperature　of　the　pure　iron　was　much　lower　than　the　IF　steel　and　the　recrystallization　process　were　significantly　different.　This　difference　was　suggested　to　be　caused　by　inhomogeneous　microstructure　in　the　pure　iron　ARB-processed.