Several large-capacity VSC-HVDCs feeding into the same receiving-end load center will add the local power flow and raise short-circuit current level, and will have a great impact on the AC system when the VSC-HVDC system is down because of fault. In order to scatter the VSC-HVDC dropping points and reduce the difficulty of the DC power consumption in the AC system of the receiving end, this paper comes up with two split-pole feeding ways of VSC-HVDC, in which two poles are connected to two different voltage-level AC grids and two poles are connected to two inverter stations. Firstly, this article theoretically analyzes the impact of split-pole feeding methods on the VSC-HVDC control and protection system. Secondly, pole-to-pole interaction factor is introduced for the first time to prove that the VSC-HVDC split-pole feeding methods can reduce the mutual influence between the positive and negative poles. Finally, the fact that the DC split-pole feeding method can indeed improve the safe and stable operation level of the system is verified by simulation in PSCAD.