Abstract: Considering the development trend of voltage source converter based multi-terminal direct current transmission（VSC-MTDC） technology, and based on mechanism derivation, the performance of existing multi-terminal coordinating control strategies for VSC-MTDC in the new situation is analyzed. To improve the performance of existing multi-terminal coordinating control strategies, an active power balance oriented coordinating control strategy for VSC-MTDC system is proposed. In the proposed control strategy, an active power balance oriented coordinating control strategy is proposed to realize the active power balance of the VSC-MTDC system in dynamic process, which improves the dynamic control performance of the voltage in the DC grid, reduces dynamic deviation of the transmission power for the converter stations, and improves the accuracy of the transmission power for the converter stations. Then, the fast and accurate control of the DC voltage while ensuring the transmission power accuracy of the VSC-MTDC can be realized. A four-terminal VSC-MTDC simulation system is built in PSCAD/EMTDC to verify the effectiveness of the proposed control strategy.