A VARIETY AND WIDE RANGE OF PRODUCTS UTILIZING CVD DIAMOND (CVDD) HAS BEEN DEVELOPED IN GENASYSTEMS INC. AMONG VARIOUS PRODUCTS, INTERESTING AND PRACTICAL APPLICATIONS OF CVDD ARE TOOLS USED FOR TURNING, CUTTING, OR DRILLING HOLES TO VARIOUS WORKPIECES. IN GENERAL, CVDD TOOLS ARE REQUESTED TO FULFILL THE FOLLOWING REQUIREMENTS: HIGH ADHERENCE BETWEEN THE SUBSTRATE AND THE THICK DIAMOND FILM, SMOOTH SURFACE FINISH AND QUALITY OF CVDD THICK FILM, ESPECIALLY WEAR RESISTIVITY. THIS PAPER DESCRIBES, WITH SOME ACTUAL APPLICATIONS, THE PERFORMANCE AND FEATURED PROPERTIES AND THE ADVANTAGE AND PROBLEMS OF CVDD TOOLS, AS WELL AS A PERSPECTIVE VIEW FOR THE APPLICATION OF CVDD FILM TO THE TOOLS.