The aim of this diploma thesis is to clarify the evaluation of business process management maturity. The theoretical part of the thesis is focused on a closer specification of business processes, management of business processes, evaluation of business process management maturity and maturity rating models. In the analytical part we deal with the analysis of the current state of process management in the Slovak Republic In the next part, we deal with the design of the process management evaluation methodology. Subsequently, we apply the methodology of evaluation of process maturity in the manufacturing company. When evaluating the questionnaire survey, we used the absolute and relative abundance used in general questions. A comprehensive table that evaluates the level of process management maturity is scored from 1 to 3, and based on question value averages, we measure maturity levels. Finally, we evaluate the results and then propose our own suggestions and recommendations to improve the current status and possible measures to manage them.