The invention discloses a chaos control technique based bidirectional non-contact power supply system. The chaos control technique based bidirectional non-contact power supply system comprises a DC power supply U, a full controlled bridge converter, non-contact transformers, a secondary-side converter, a filter circuit, a BOOST circuit, a charging switching device, a vehicle-mounted storage battery U, a primary-side controller and a secondary-side controller; in a positive transmission state, a mains supply acquires direct current through a power factor correction circuit, the vehicle-mounted storage battery is charged, and a solar cell also charges the vehicle-mounted storage battery; in a reverse transmission state, the solar cell supplies electric energy to a power supply side reversely, the cost is saved, and the volume and the weight are also reduced; in a positive power supply mode, a limit-cycle theory or a Poincare cross section is used for judging whether switching tubes S1 to S6 of the full controlled bridge converter work in soft switching states; in snow and rain days, a plug is not needed, and the safety performance is relatively high; and in a positive charging mode, three non-contact transformers are used, the power transmission range is larger, and the optimal state of the efficiency can exceed 94%.