A method of showing the inside status of a vehicle via a plurality of first icons is provided. The method includes the following steps: (a) disposing a status read device on the vehicle to monitor and report a plurality of operation statuses of the vehicle; (b) transforming the plurality of operation statuses into a plurality of corresponding first icons by an information transform unit; and (c) displaying the plurality of first icons corresponding to the plurality of operation statuses on a first display to show the inside status of the vehicle for the users or drivers outside the vehicle. The first display faces outward and is disposed on the left side, right side or rear side of the vehicle.