At present there is an overall discussion towards the proposal of the new Act on environmental impact assessment in the Czech Republic. This paper assesses the process of preparation of this new act. There is a detail analysis of the background situation. Particular attention is being paid to the main changes brought in by this new proposal compared to the present Act No. 244/1992. The paper brings a sequence analysis of the new legislative proposal, following the assessment of the projects, concepts and trans-boundary impacts. The whole process of assessment is elaborated in the tables.