The invention discloses a flexible and efficient customized bus system, which comprises a mobile terminal, a background service side and on-board equipment, wherein the mobile terminal receives the vehicle information and the service information of a customized bus of the background service side, and sends personal family position information, company position information, commuter time and ticket booking/returning information to the background service side; the background service side receives the information of the on-board equipment and the mobile terminal in real time, automatically matches the family position information, the company position information and the commuter time of a passenger with a vehicle position, a journey and shift information, and pushes the customized bus suitable for the passenger to the mobile terminal; the on-board equipment comprises a positioning system and a two-dimensional code information collector. Compared with the prior art, the flexible and efficient customized bus system is characterized in that the commuter time and the commuter fare of blue-and-white collar workers are saved, on-line payment, on-line ticket returning and on-line route selection can be carried out, the flexible and efficient customized bus system is flexible and convenient and realizes energy conservation and emission reduction, and traffic road congestion can be effectively reduced.