The　evolution　of　morphology　of　pearlite　and　crystallographic　texture　of　ferrite　matrix　in　fully　pearlitic　steels　during　wire　drawing　were　quantitatively　investigated.　The　study　revealed　that　a　fiber　structure　of　the　pearlite　morphology　and　a　＜　110　＞　fiber　texture　of　the　ferrite　matrix　begin　to　take　shape　and　develop　gradually　with　increasing　strain.　The　growth　rates　of　the　fiber　structure　and　the　＜　110　＞　texture　are　different　in　different　regions　within　the　wires　with　increasing　drawing　strain.　There　is　a　close　relationship　between　the　pearlite　morphology　and　the　crystalline　texture　during　wire　drawing.　The　pearlite　interlamellar　spacing　(ILS)　and　thickness　of　cementite　lamellae　(T　(theta))　decrease　gradually　both　in　longitudinal　and　transverse　sections.　The　definition　of　pearlite　colony　should　be　reconsidered　for　describing　microstructure　of　the　wire　drawing　deformed　pearlitic　steels.