Abstract: Three different pitch fluorides were prepared by the reaction of pitch grains with a gas mixture containing fluorine and nitrogen in a rotating nickel reactor. The raw pitches are mesophase microbeads, mesophase pitch and isotropic pitch. The surface energy, contact angle with water, the stability in acid or alkali media and weight loss upon heating were investigated. Results showed that the fluorinated reaction rate of the raw pitches and the weight loss rate of the pitch fluorides were quite different, which may be caused by the difference in the molecular weight distributions and the compositions of the raw pitches. However, the surface energies of the pitch fluorides were all low and the resistance of the pitch fluorides to acid or alkali was similar.