The　effect　of　electric　current　on　microstructure,　texture,　deformation　behavior　and　tensile　properties　were　investigated　for　the　electrically　assisted　friction　stir　welding　process　of　Ti-6Al-4　V　alloy.　The　base　material　has　strong　prismatic　texture　{1010}　1120　1120　a　1120　1011　twinning.　The　introduction　of　current　into　the　welding　process　has　resulted　in　the　alleviation　of　the　abrupt　change　of　microstructure　between　the　surface,　center　and　bottom　of　the　stir　zone,　the　decrease　in　texture　strength　and　more　uniformly　distributed　strain.　The　improvement　of　tensile　properties　without　loss　of　ductility　for　the　electrically　assisted　joints　was　mainly　attributed　to　microstructure　and　strain　homogeneity,　beta　phase　dissolution　and　random　orientations.