The traditional bulk loading system of aggregate production lines has a low level of intelligence, and there are problems during the loading process, such as the need for drivers to cooperate with the truck, the tendency of bulk machines to jam and overflow materials, and the difficulty of quantitative loading. The quantitative automatic loading system based on mobile belt machines achieves the design goals of quantitative loading, automatic feeding, and intelligent operation of central control through buffer bin replenishment, weighing bin measurement and control, bidirectional reversible tape machine uniform loading, and precise loading capacity using car scales. This reduces the number of operators, reduces labor intensity, reduces operating costs, and improves loading efficiency.