The present paper is concerned in the general medical image diagnosis system that is now being developed by us. This system is called "DR SMIS" (abbreviation of "Digital Radiology by Sakura Medical Imaging System"). The system is to comprise five subsystems, namely, the Manager or image data base taking central role, and four others, Image Processor, Image Input Port, Image Hard Copier and Network. Of these five subsystems, the Manager, the image processing language for the Image Processor, the film digitizer for the Image Input Port, and the film laser writer for the Image Hard Copier have been completed till now. Here we will describe primarily about such image processing language system.