Elaboration of the issues of Environmental Impact Assessment (EIA) called attention to environmental carrying capacity being a component of this assessment in connection with the prepared Act of the Slovak National Council of EIA. The term environmental carrying capacity of the territory means its reaction to external pressure of antropogenous activity. Environmental carrying capacity is not related only to natural environment, but also to urban and human environment. It is a feature resulting from the relation of man to environment. Evaluation of environmental carrying capacity will be a part of the EIA process for particular activities and it will be applied also in the concept of territorial planning in CSFR.