Introduction: This paper is devoted to actual problems of the influence of "contraction reengineering" on enterprises management structure in modern changing environment conditions. The question is a radical rethinking of the existing business management structure and revealing of the competitive potential for existing management structure of enterprises in the conditions of transformation and uncertainty. Methods: In the study we have used methods of financial and economic analysis, a wide range of methodologies of strategic management and financial management, some methods of innovation management, methods of strategy management diagnosis, and innovative methods of business reengineering. Results: "Contraction reengineering" tools are presented in terms of innovative development of the enterprise as the necessary condition for quality transformation. The authors have revealed the main directions of evaluation of changes and risk reduction, justified the choice of the growth rate of enterprise development, and considered an enterprise reengineering management model. Discussion: The paper analyses the approach of M. Hammer that had been developed in the early 90s of XX century and resulted in a broad scientific discussion and that is relevant to the present. The approach of modern Russian scientists on the business process management problem is considered in detail. The authors share the opinion of the economist I.T. Balabanov in matters of dynamics of engineering business processes. We have studied the definitions of engineering, reengineering, introduced the author's definition of "contraction" engineering, and "expansion" engineering. Final Report: Some conclusions formulated can be used in enterprise management to select the most effective methods in terms of the implementation of the key success factors
