To provide mounting structure of an outside door handle capable of being easily built up by simple constitution and, at the same time, providing an operating sound with a sense of high class.

The mounting structure of an outside door handle is equipped with a base 11 fixed to a door panel, a handle 12 rotatably supported around a rotational shaft extended in the nearly horizontal direction to the base 11 and a spring 13 urging the handle 12 to a closed position, and it is so constituted that a pair of oval engaging parts 11a formed on the base 11 so as to make back to with each other or oppose against each other on the rotational shaft, a pair of shaft holes making back to back with each other or opposing against each other on the rotational shaft and formed so as to rotatably engage with the engaging parts 11a in a rotational manner on the rear side of the handle 12 respectively and a cushion rubber 14 provided to the base 11 so as to bring a part of the handle 12 into contact with the closed position of the handle 12 are included and that the shaft holes are equipped with an insertion groove extended from the end edge of the front side of the handle 12 by slightly inclining to the rear side from the closed position.