In order to improve ergonomics of the head-up display(HUD) based on the new application background special vehicle night-driving, analyze and evaluate viewing field and eye box of the night vision vehicle head-up display(HUD). In accordance with some data, such as the body size and vision trait in Domestic and international standards, and combined with the complex night application environment of special vehicle, the ergonomics simulation analysis and experimental verification of the design eye position, the visual field of view and the eye box of the night vision vehicle head-up display were performed. Through analysis and comparison of the outcome, and provide the basis for the design improvement of the field of view and the eye box of the night vision vehicle head-up display, improve the "driver-HUD-environment" man-machine system adaptability.