A dynamic storage device, comprising: a central control system; at least one storage area, having a plurality of power carrying and moving devices, and the central control system controlling the direction and predetermined stop position of the power carrying and moving devices; each power carrying and moving device having a predetermined number of storage location, and the storage location being recorded by the central control system; each storage location being dynamically specified for placing a carrier group; the carrier group being formed by stacking a predetermined number of carriers; the carrier carrying an object; each carrier being attached with a Radio Frequency Identification (RFID) tag, and the RFID tag having tag information that can be written and read repeatedly; the tag information recording object data of the carrier; a carrier detection device, installed in the storage area, for sending a detection result of each storage location with or without the carrier group, and reading and sending each tag information read by the carrier group to the central control system, the central control system recording the tag information of each carrier group according to the storage location; a power transmission device, communicating to the power carrying and moving devices, the central control system controlling the power transmission device to move and stop; the power transmission device and the power carrying and moving devices controlling the carrier group to enter a storage location specified by the central control system; and the power transmission device and the power carrying and moving devices also controlling the carrier group to move out from its storage location; at least one gate, communicating to the transmission device; for moving the carrier group disposed at the gate to move out from the storage area or enter into the storage area; the gate having a gate detection device, and the gate detection device sending the gate with or without the carrier group, the quantity of carriers contained in the carrier group, and each tag information of the carrier group to the central control system; at least one temporary storage area, communicating to the gate, for receiving the carrier group coming from the gate and having a quantity of carriers less than the predetermined value; the temporary storage area having a temporary storage detection device installed therein and provided for sending the temporary storage area with or without the carrier group, the quantity of carriers of the carrier group, and each tag information of the carrier group to the central control system. a central control system; at least one storage area, having a plurality of power carrying and moving devices, and the central control system controlling the direction and predetermined stop position of the power carrying and moving devices; each power carrying and moving device having a predetermined number of storage location, and the storage location being recorded by the central control system; each storage location being dynamically specified for placing a carrier group; the carrier group being formed by stacking a predetermined number of carriers; the carrier carrying an object; each carrier being attached with a Radio Frequency Identification (RFID) tag, and the RFID tag having tag information that can be written and read repeatedly; the tag information recording object data of the carrier; a carrier detection device, installed in the storage area, for sending a detection result of each storage location with or without the carrier group, and reading and sending each tag information read by the carrier group to the central control system, the central control system recording the tag information of each carrier group according to the storage location; a power transmission device, communicating to the power carrying and moving devices, the central control system controlling the power transmission device to move and stop; the power transmission device and the power carrying and moving devices controlling the carrier group to enter a storage location specified by the central control system; and the power transmission device and the power carrying and moving devices also controlling the carrier group to move out from its storage location; at least one gate, communicating to the transmission device; for moving the carrier group disposed at the gate to move out from the storage area or enter into the storage area; the gate having a gate detection device, and the gate detection device sending the gate with or without the carrier group, the quantity of carriers contained in the carrier group, and each tag information of the carrier group to the central control system; at least one temporary storage area, communicating to the gate, for receiving the carrier group coming from the gate and having a quantity of carriers less than the predetermined value; the temporary storage area having a temporary storage detection device installed therein and provided for sending the temporary storage area with or without the carrier group, the quantity of carriers of the carrier group, and each tag information of the carrier group to the central control system.