The aim of master work is to create Work Flow analysis information system. Work tasks are to present the principles of modified workflow models usage in user requirements acquisition and analysis stage, to present algorithms such as break points removal algorithm and material process control validation algorithm based on EVC , which are used to verify collected information, to analyze workflow model and process work flow model structure. Master work accomplished with Borland C++ Builder, MySQL programs, additionally used Devexpres componnents. Used such research methods as analysis of nonfiction literature, analysis, description, synthesis, comparison, parallel. In master work is created Material process control validation analysis information system, which is part of user requirements acquisition and analysis stage. Made analysis of modeling languages and standards, presented enterprise model components. After improvement of Information system creation process with information core we can save IS designing time, improve solutions quality. The last result of user requirements acquisition and analysis is - user requirements acquisition usage to other IS life cycle stages.