Because of low demand on communication and its high reliability, droop control is widely used in multi-terminal high voltage direct current systems. However, in traditional droop control, the droop coefficient is fixed. When the power fluctuates greatly, it is easy for this to lead to overload of the converter station, and the DC line resistance will affect the active power-sharing of the converter. To prevent this, an adaptive droop control method considering the influence of line resistance is proposed. First, the equivalent circuit of multi-terminal high voltage direct current under droop control is analyzed, and the droop coefficient setting method considering the influence of line resistance is deduced. Then the fixed power ratio is replaced by the power margin ratio of the converter station in the setting method to realize the adaptive adjustment of the droop coefficient. Finally, a simulation model is built on PLECS to simulate different working conditions, and the effectiveness of the proposed control strategy is verified. This work is supported by the National Natural Science Foundation of China (No. 52077030).