Problems of constructing analytical information systems and their application in controlling industrial processes at oil refining enterprise are considered. Systems being focused on control decisions support problem are regarded. Basic tasks, arising at constructing such systems and the ways to overcome them are listed. The appearance of multipurpose analytical information system (MAIS) is developed to serve as universal platform to create intellectual control tools.The article carries arrangement character and is devoted to problems of elaboration MAISs and their implementation in the interests of improving industrial and technological control processes.