An electrical energy router (EER) can realize the flexible access of new energy, energy storage and a variety of electrical loads. Coordinated control and operational mode switching are the focus of its operation control. To achieve a smooth transition of the EER operating mode and reduce the switching impact caused by the change of control mode of the bus regulator during that mode switching, the voltage disturbance mechanism during grid-connected and isolated operating mode switching is first analyzed. The influence of power abrupt change in the system and the regulation process of the bus regulator controller on the system is studied. Then, the EER mode switching sequence is designed, and a coordinated mode switching control strategy based on the advance compensation of the controller output of the shift ratio holder and the current holder is proposed. This can achieve real-time port power balance, reduce voltage disturbance in the mode switching transient process, and improve the transient stability of the system. Finally, an EER simulation model is established in Matlab/Simulink simulation software to verify the effectiveness of the proposed control strategy.