Abstract: The application of EBSD (electron back-scatter diffrantion) is reviewed in materials microtexture study. Microtexture,boundary angle distribution and orientations in high purity copper cold rolled up to 96% （thickness reduction） were investigated. It was found that some special microtexture came forth in the pure copper after cold rolled and the mainly texture were 112〈111〉and110〈112〉. And the area fractions of boundary high angle were decreasing with the increase of deformation at low strain ,while,increased at high strain with increasing cold rolling reduction.