To　reduce　the　vibration　and　decrease　noise　of　printing　presses　of　high　speed,　with　finite　element　method,　modal　analysis　of　the　structure　of　a　printing　press　has　been　conducted.　To　avoid　resonance,　the　structure　of　the　printing　press　has　been　improved.　The　units　used　in　the　finite　element　calculation,　the　processing　method　of　the　joints　between　parts　and　the　method　of　establishing　the　machine　model　have　been　discussed.　This　method　can　be　applied　efficiently　to　designing　various　mechanical　structure　to　reduce　vibration　and　decrease　noise.