A displaying method and a displaying system for a vehicle, include obtaining a current date; determining whether to set an image of a holiday or anniversary to be displayed on a display of the vehicle by providing a display setting option to select or not to select a display setting option of a user; providing a display setting option and receiving a user's selection of the display setting option; when the display setting option is selected, comparing the obtained current date with preset holiday data and/or the preset anniversary data to determine whether the current date is a holiday corresponding to the preset holiday data, or determine whether the current date is an anniversary corresponding to the preset anniversary data; and displaying a pre-stored image related to the holiday and/or anniversary of the current date on a display of the vehicle.