Polyamide films were deposited by a vacuum deposition polymerization method from terephthaloyl chloride and p-phenylenediamine on substrates that were rubbed with seven Binds of polymers. Uniaxially orientation in-plane of the films were determined by IR measurements with polarized light parallel and perpendicular to the rubbing direction. Evident dichroism of C=O bands was observed in the spectra of the him that was deposited at 35 degrees C on the substrate rubbed with cotton. The dichroism indicates that the polyamide film has almost perfect orientation in-plane; polymer chains and C=O groups are aligned almost parallel and perpendicular to the rubbing direction, respectively. Orientation of the films was affected by both critical surface tension of the rubbing polymers and temperature of the substrates.