The study surveys the most important aspects of the national adult training from educational economy point of view. The authors examine the national limits of legal rule of adult training. They present the different sub-systems of adult training i.e. the educational system, the non-educational system and the working place training characteristics of participation making international comparison too. We look over the target groups of adult-training and the participants motivation of the teaching arena. We also have a look at the domestic costs of the different froms of adult-training, and the division of this expenditure among the participants.