The invention provides a carpooling taxi and a carpooling method thereof, which belong to the field of taxi carpooling. According to the carpooling taxi, a display screen is additionally arranged on the roof of the taxi and used for displaying the current position of the taxi, main places through which the taxi drives, a destination and the quantity of passengers in the taxi or the quantity of passengers who can still
carpool in the taxi, and a passenger can freely select an appropriate taxi for carpooling in accordance with the information and personal situation. The carpooling method is flexible and accurate. According to the carpooling taxi and the carpooling method, the information of a driving
route selected by a taxi driver is sent to a
server of a taxi company, the taxi company can supervise whether the taxi driver drives in accordance with a preset
route, and the taxi driver is prevented from violating regulations, for example, the driver deliberately selects a long
route. In addition, a reasonable proportion for charging is selected in the process of carpooling in accordance with the driving distance and the on-off order of the passengers, the passengers save fares, and the taxi driver earns more fares.