Abstract: In order to solve the problem of wiring road parameters optimization in dual-energy truck transportation system, we used MATLAB software to analyze the ramp speed change of dual-energy truck, and determine the speed node of uphill uniform motion, the length of a single ramp and the design speed of road parameters optimization. Then, starting from the influencing factors and significance of road parameters optimization, we proposed the calculation method of parameters, which made the parameters optimization based on the operation performances and road conditions of dual-energy truck, and the optimization results could give play to the performance advantages of dual-energy truck and ensure the operation safety. Taking an open pit mine as an example, the study results showed that the average uphill speed of traditional truck was 15.86 km/h, and the length of a single ramp was 450 m. The average uphill speed of dual-energy truck was 24.43 km/h, increasing by 54.04%, with high transport efficiency. The length of a single ramp was 1050 m, increasing by 133.33%, with strong climbing ability. Convex vertical curve radius of dual-energy truck was 350 m and the curve radius was 120 m. Convex vertical curve radius of traditional truck was 150 m and the curve radius was 50 m. Dual-energy truck needed a larger radius to ensure safety.