Disclosed herein is a radiation image information processing system basically comprising a plurality of image reading devices, a plurality of image recording devices and CRT displays which are respectively connected to the image reading devices, and a plurality of IDTs serving as registering means to which ID information of objects and other information are inputted. Further, the radiation image information processing system is characterized in that respective ones of the registering means, which are electrically connected to one another, are electrically connected to corresponding ones of the plurality of image reading devices, and other registering means are electrically connected to the respective ones of the registering means electrically connected to the corresponding ones of the plurality of image reading devices, the respective ones of the registering means electrically connected to the corresponding ones of the plurality of image reading devices having information control functions capable of storing therein information inputted to either the respective ones of the registering means or other registering means referred to above electrically connected thereto and of reading the so-stored information therefrom as needed.