The effect of the vibration on the optical equipment is analyzed. Aiming at the design of the vibration reduction for the optical devices，the concept of 3-DOF vibration reduction is proposed. The 3-DOF vibration reduction system has the ability of the vibration isolation buffer and the function of the angle vibration reduction suppression. The anti-vibration and anti-impact designs of 3-DOF vibration reduction system are calculated. The characteristic of the vibration reduction is verified by the bench test，which can meet the requirements of optical equipments.