The straddle carrier is a self-propelled container handling equipment specially used in ports, container yards and large logistics hubs. It integrates walking, positioning, lifting, transportation and stacking functions, and can independently complete short-distance transportation and multi-layer stacking of containers without crane assistance, serving as the core intelligent equipment of modern port logistics. Adopting a large-span gantry frame structure, it has a stable chassis and low center of gravity with excellent driving stability, suitable for all-weather operation on flat yard roads. Equipped with a hydraulic lifting system and precise positioning system, it features stable lifting and accurate positioning, enabling precise container placement and orderly multi-layer stacking, greatly improving yard space utilization. Built with industrial-grade high-strength steel, it has excellent load-bearing performance, adapting to high-frequency and high-intensity continuous operation of heavy-duty standard containers in ports with strong impact resistance and wear resistance. With an intelligent control system, it is easy and flexible to operate, with convenient steering and stable walking, realizing flexible scheduling in narrow spaces and improving yard operation efficiency. It is also equipped with multiple safety protection devices such as emergency braking, anti-collision early warning, overload protection and limit shutdown to fully ensure the safety of equipment and goods. Compared with the traditional lifting and transportation mode, it has a more streamlined operation process and strong mobility without fixed operation points, which can greatly reduce port yard operation costs, and is widely used in the whole process of container distribution, storage, transit and loading.