A device information management system has a plurality of managed computers connected with devices. Device information of each device is to be transmitted to a requestor upon request thereby. That is, each of the plurality of managed computers has a data spooler that adds jobs in a data queue. The jobs in the data queue is transmitted to the device one by one. An information requesting system transmits a request command that requests a device to return the device information when the number of jobs in the data queue is equal to or less than a predetermined value. Then, an information receiving system receives the device information returned from the device, which is stored in the storage. The stored device information is transmitted to the requestor in response to inquiry therefrom.