The utility model discloses a noise-reducing installation structure for a dry type transformer enclosure, which comprises an enclosure body and a transformer installation base that are installed on a floor of a substation room, wherein the enclosure body is of a box structure with an opening facing the lower end and is cuboid, the transformer installation base is of a cuboid structure which is matched with the shape of the lower end opening of the enclosure body, the lower parts of the internal wall surfaces of the four sidewalls of the enclosure body are respectively provided with an inwardly projected boss, the external surfaces of the four sidewalls of the transformer installation base are respectively provided with a notch matched with the corresponding boss, the transformer installation base is installed in the lower end opening of the enclosure body in a way that each boss is clamped in the corresponding notch, and a shock-absorbing rubber pad is arranged between each boss and the corresponding notch. The noise-reducing installation structure disclosed by the utility model can effectively reduce the noise of a dry type transformer.