Pole figures of crystal planes (020) and (110) for uniaxially stretched polyvinyli-dene fluoride were measured by X-ray diffraction. Samples were drawn at 100℃ and 160℃

with extension ratio from 250% to 420%.Numerical values of the mean-square cosines of the crystal planes are calculated from fully corrected intensity distribution.The mean-square cosines with respect to drawing direction were obtained by coordinate transformation with the use of Wilchinsky method.When T = 100℃

during the drawing process the crystal was transformed from a-form to β-form

and the diffraction intensity and position of diffraction peak changed.