To provide a fitting structure of an operation button that functions to put ON a tact switch and at the same time to have a light-emitting element emit light by pushing of a button cap.

The tact switch 8 and the light-emitting element 7 are fitted to a circuit board 6, a button frame 4 is fitted to a front panel 9 of the electronic equipment, a glass light-emitting element 5 with a plurality of sheets of blades 16, 16.. protruded at an outer periphery of a cylindrical body is housed in an inner space 10 of the button cap 3, and the button cap 3 housing the glass light-emitting element 5 is fitted to a rest part 13 of the button frame 4. Locking parts 20a, 20b formed at the bottom of the button cap 3 are locked to pawls 21a, 21b provided at the rest part 13, and further, the rest part 13 is enabled to be bent through a thin joint part 14.