Research object – the management of private forest. Research aim – to determine the type of decision-making and factors, affecting the decision–making in private forest estate. Objectives: 1. To determine the conception of private forest management and sustainable development, to describe the process of private forestry and to traverse the theory of decision–making. 2. To examine and traverse the management of private forestry in Lithuania. 3. To describe the characteristic’s of private forest owner and his private forest estate, the decisions of private forest owners’. 4. To prepare a model of decision–making in private forestry in order to support sustainable development of the country. Research methods – scientific literature analysis and synthesis, questionnaire, induction and deduction, dispersive analysis, comparative analysis, methods of logical thinking, graphic modeling, and other methods. While studying Lithuanian and other countries authors’ scientific works, periodical literature about management of decision-making, there are examine, traverse and describe the type and factors affecting of decision-making in private forest estate.