The grain boundary plane distribution in the cold-rolled and annealed ferritic stainless steel has been analyzed statistically by a five-parameter method based on the mis-orientations of adjacent grains and the orientations of grain boundary traces determined by electron backscatter diffraction(EBSD) attached to a field emission scanning electron microscope(FE-SEM).The results show that no preferred texture occurrs either in grain orientations or grain boundary mis orientations characterized by axis-angle pairs in the specimens which were cold rolled by 85%reduction in thickness and subsequently annealed at 780℃.However,there are developed textures for the orientations of grain boundary planes.And also,the preferred planes vary with averaged grain size levels.At the level of 9μm,grain boundary planes favor the {100} orientation,with their density distribution 12% higher than a random distribution;Whereas at the level of 15μm,{111} planes are preferred and {100} and {112} planes are sub-preferred,with the density distribution on {111} about 10%higher than a random distribution.Moreover,the anisotropy of grain boundary plane distributions is larger at specific mis-orientations.The discussion points out the preferred grain boundary planes might possess lower energies and tend to being preserved due to their lower growth rates during annealing.