The results of GP Cep photometric and polarimetric observations, mostl
y of 1989, are presented. Investigation of polarization changes with p
eriod of the star pair A (6d,6884), in which a WN6 star is contained,
permits to determine the orbit plane inclination angle i = 65-degrees.
Furthermore, a study of GP Cep intrinsic polarization allows to sugge
st a model of the star pair with matter nux between its components.