Multi-function self balancing two rounds of car technology [0001] the utility model relates to a kind of traffic tools, especially those involving a kind of multi-functional self balancing two rounds of car. Technical background [0002] two rounds of the balancing device and technology originated in the inverted pendulum theory, first by the Japanese mountain cane a male invented the similar two wheel balancing device, from 2002 to 2003, successively by the United States for technology and the ibot wheelchair two rounds of the balance of the car, is considered to be an excellent fitness tools and auto replacement in the future. System has been applied in the post office, police stations, shopping malls, parks, warehouses, offices, enterprises, universities and government agencies. [0003] of the existing since the balance two rounds of car it was quite expensive, complex control system, when the driver is wrong or having some unexpected situation caused two rounds of car bumping, causing the driver falls; And because the driver to stand down, fatigue driving is no health of body and mind for a long time; When the rider to carry items at the same time, will cause interference to driver to manipulate the balance two rounds of car