The invention discloses a diesel generator with a vibration reducing function. The diesel generator comprises a support frame; the inner bottom wall of the support frame is fixedly connected with a support block; an accommodating cavity is formed in the inner top wall of the support block; the inner bottom wall of the accommodating cavity is fixedly connected with first vibration reducing springs arranged at equal intervals; two symmetric accommodating tanks are formed in the inner side wall of the accommodating cavity; second vibration reducing springs are fixedly connected to the inner bottom walls of all the accommodating tanks; clamping grooves are respectively formed in the inner side walls of all the accommodating tanks; a movable plate is placed in the accommodating cavity, and two ends of the movable plate are respectively clamped in the two accommodating tanks; and the top ends of each first vibration reducing spring and each second vibration reducing spring are both fixedly connected with the bottom of the movable plate. The diesel generator with the vibration reducing function can effectively and slowly release up-down vibration force and left-right vibration force generated during working, is excellent in vibration reducing function, effectively prevents sliding and tilting, and is high in safety coefficient.