Abstract: The dynamic interaction among various types of equipment may lead to oscillations and instability in VSC-HVDC, which poses a serious threat to the safe and stable operation of the power system. Given the complex coupling relationships among variables in VSC-HVDC, the traditional root locus analysis method may suffer from low computational efficiency as system eigenvalues need to be calculated point by point. To address the issues mentioned above, this study presents a rapid construction method for the stability region of operation parameters in the VSC-HVDC system based on the D-partition method. Firstly, a small-signal model of VSC-HVDC is established, and the impedance model is derived based on the input-output relationship of each link within the system. Secondly, the operating principle of the D-partition method is illustrated, and the analytical expression between operation parameters and stability boundary is established. Subsequently, to reduce the number of algebraic equations, a reduced-order impedance model and a method for constructing stability region are proposed according to the frequency response characteristics of the impedance model and the instability mechanisms in multiple bands. Finally, based on the system characteristic equation derived from the reduced-order impedance model, the analytical expressions for the stability regions of VSC-HVDC parameters are established by the D-partition method in both conventional operation mode and power mutual assistance mode. The validity and correctness of the theoretical analysis are verified through MATLAB/Simulink time-domain simulations.