Abstract: An open-pit mine truck automatic dispatching system and method, which comprises a digital twin creation module and a driver terminal; the digital twin creation module creates the dispatcher digital twin, the dispatcher digital twin receives the production plan, and creates the loader digital twin, the unloading point digital twin, the truck digital twin and the transportation path digital twin according to the production plan. The driver terminal obtains the available information of loaders and trucks and sends the available information to the dispatcher digital twin; the dispatcher digital twin generates dispatching commands based on available information, schedules the loader digital twin and the truck digital twin based on the dispatching command, and updates the property information of the loader digital twin, the unloading point digital twin, the truck digital twin and the transportation path digital twin. The invention realizes the automatic dispatching of open-pit mine trucks.