An operation device includes: a touch panel on which at least one operation button is displayed; a press position detection unit detecting a press position when a user presses the touch panel; a button operation detection unit determining whether an operation is applied to the operation button based on the press position; a button operation appropriateness determination unit determining whether a button operation by the user is appropriate; and a button operation facilitating unit facilitating subsequent button operations by the user when it is determined by the button operation appropriateness determination unit that the button operation by the user is inappropriate.