To provide amounting device of a handle capable of easily and certainly mounting the handle.

This mounting device is constituted of a handle 1 furnished with a pair of left and right mounting legs 2, 2 inserted in a mounting hole 8 of a body to be mounted P and head end parts of which are projected to the back surface side and a plate type mounting member 6, the handle 1 is furnished with a contact surface 5 to make contact with a surface of the body to be mounted P at the time when the mounting leg 2 is inserted in the mounting hole 8 of the body to be mounted P, the mounting leg 2 is furnished with a fine diametrical shaft part 3 and a collar part 4 formed on a head end of the fine diametrical shaft part 3, a pair of long grooves 7, 7 into which the fine diametrical shaft parts 3 of a pair of the mounting legs 2, 2 are respectively inserted are formed on the mounting member 6 by opening to one end edge of the mounting member 6, and an inclined surface 6a is formed on one surface of the mounting member 6 so that width of each of the long grooves 7 is made smaller than width of the collar part 4 and thickness of the mounting member 6 becomes gradually thicker toward a deep end part of the long groove from a head end opening edge of the long groove 7.