A decorative member of a switch device can be easily removed while suppressing breakage and deformation of an engagement portion. The switch device includes a first knob, a press detection switch pressed by an operation force transmitted from a press operation applied to the first knob, a decorative member that decorates a periphery of the first knob, and a
retainer that engages and holds the decorative member, the decorative member has an engaged portion, and the
retainer has an engagement portion that engages with the engaged portion. When a press operation of a first
stroke amount is performed on the first knob, the operation force of the press operation applied to the first knob is not transmitted to the engaged portion but is transmitted to the press detection switch, so that the press detection switch is pressed. When a press operation of a second
stroke amount greater than the first
stroke amount is performed on the first knob, the operation force of the press operation applied to the first knob is transmitted to the engaged portion, so that the engaged portion is elastically deformed, and the engaged state of the engagement portion and the engaged portion is released.