The utility model provides a high-frequency bidirectional isolation system, and the system comprises a low-voltage side unit, a high-frequency bidirectional isolation transformer, and a high-voltage side unit. The low-voltage side unit is connected with the low-voltage end of the high-frequency bidirectional isolation transformer, and the high-voltage side unit is connected with the high-voltage end of the high-frequency bidirectional isolation transformer. The system provided by the utility model solves the problems of the requirements for high-frequency isolation, energy bidirectional flow and voltage increase and decrease in the field of current transformation of power electronic systems, and is very high in innovativeness. The topological application can effectively improve the integration and stability of the whole system, and easily meets the requirements of the functions of high-frequency isolation, energy bidirectional transmission and voltage increase and decrease. The system is small in size, and is light in weight. The system achieves the high-efficiency and precise transfer of energy and the transfer of energy according to the needs. The system is high in innovativeness, can facilitate the innovative application in the field of current transformation of power electronic systems, and hopefully achieves higher economic and social benefits.