An H infinite decentralized coordination control method for multiple bidirectional current converters in an AC (alternating current)/DC (direct current) microgrid is disclosed. The method comprises the following steps: a decentralized self-adaptive inverse droop controller is used to control the system consisting of multiple bidirectional current converters running in parallel; a state space expression of the multiple parallel bidirectional current converters that are under active power-frequency droop control is established; based on a balanced truncation method, the order of the obtained state space expression of the multiple bidirectional current converters running in parallel under the active power-frequency droop control is reduced, and the state space expression with a reduced orderof the multiple bidirectional current converters running in parallel is obtained; as for the state space expression with the reduced order of multiple parallel running bidirectional converters, an optimal H infinite performance index of the system consisting of the multiple bidirectional current converters running in parallel is taken as an objective function based on H infinite theory, and an H infinite decentralized coordination controller for all current converters can be solved and obtained. Via the method disclosed in the invention, dynamic response and steady-state performance of the system is optimized, and the method has important value in maintaining the stability of AC/DC microgrid frequency.