This study focuses on bus voltage stability control for DC micro grid in special vehicles under pulse loads, proposing a Fuzzy Active Disturbance Rejection Control (Fuzzy ADRC) strategy. Pulse loads’ high - power density and periodic characteristics lead to severe bus voltage fluctuations, which are addressed by integrating Active Disturbance Rejection Control with fuzzy logic. The ADRC utilizes an Extended State Observer (ESO) to dynamically estimate and compensate for system disturbances, while fuzzy control adjusts the nonlinear feedback coefficients in real - time to adapt to the nonlinear and time - varying nature of pulse loads. Simulation results demonstrate that the proposed Fuzzy ADRC effectively suppresses voltage oscillations, reduces overshoot, and enhances dynamic response, ensuring robust bus voltage stability. The approach combines Voltage Stability Control, Fuzzy Control, and Active Disturbance Rejection Control to tackle bus voltage challenges in pulse load scenarios. Simulation results verify the effectiveness of the proposed method.