The present paper reviews the recent results on the synthesis, compositions, structures, electrical conductivities and electrochemical behavior of graphite intercalation compounds with fluorine, transition metal fluorides and transition metal oxide fluorides. All the compounds were synthesized in a fluorine atmosphere and characterized by X-ray and electron diffraction measurements, elemental analysis, XPS, IR spectroscopy, electrical conductivity measurement and so on. Among the prepared compounds, C_xF, C_xTiF₅, C_x VF₆, C_xVOF₄, and C_xTiOF_y have high stability in air because of the C–F bond formatlon, fluorine bridging structure and nestling of octahedral fluoride anion into hexagons of carbon sheets. The in-plane electrical conductivities are similar to those of metals, being higher by one order of magnitude or more than that of a pristine pyrolytic graphite.