This paper focuses on the direct current（DC）voltage control strategy in the voltage source converter suitable for multi-terminal DC（VSC-MTDC）systems.The demerits of the most recognized DC voltage margin control strategy and DC voltage droop control strategy are analyzed.And by referring to the merits of the two strategies，a novel DC voltage control strategy named the DC voltage margin droop control strategy is proposed.The DC power tracking of the converter station is achieved by applying the margin property，while the droop property helps with its dynamic response speed.Finally，steady state and transient state simulations are performed with PSCAD/EMTDC to validate the feasibility of the proposed strategy.The results show that by applying the DC voltage margin droop control strategy，the VSC-MTDC system runs stably and reliably.