The invention belongs to the technical field of civil engineering. An aggregate conveying device is used for the material transfer in an aggregate silo, and comprises an aggregate hopper, a conveyingcomponent, and a mid-partition, wherein a discharge opening is arranged at the bottom of the aggregate hopper; the feeding end of the conveying component corresponds to the discharge opening; and theaggregate hopper and the conveying component are respectively arranged on both sides of the mid-partition. An aggregate conveying operation system comprises the aggregate silo, an aggregate conveyingdevice, a spreader, and a mixing station, wherein the aggregate hopper and the mid-partition are arranged in the aggregate silo; the discharging end of the conveying component corresponds to the spreader; and feeding equipment is arranged between the spreader and the mixing station. The invention also provides a construction method of the aggregate conveying operation system. The aggregate conveying device and operation system and the construction method thereof are reasonable in structure design, and efficient and practical, can realize sealed, convenient and environmentally friendly operation, improve the operation efficiency and optimize the operation construction process.