Regional Aspects of Eco-Development The paper concerns problems of putting in rules of sustainable development in the regional scale. The necessity of actualizing rules of eco-develop-ment comes from environmental barriers which revealed within late years (e.g. processes of soil erosion, disafforestation, emission of atmospheric pollution, species decay etc.). Such situations generate necessity of a change of our course of action when exploiting natural resources. We should resign technologies and all the manners of managing which lead to degradation of natural environment and instead of that we should pay more respect to the rules of nature. At each level of administration we must consider five basic principles of our action on environment. The principles are as follows: conservation of dynamic energy of ecological formations, ecological uncertainty, reduced influence on protected areas, protection of species variety and making minimal abiotic changes in environment. There are some problems of sustainable development which on the whole depend on local authorities (e. g. local population health state, quality of the air, waste administration, conservation of nature, land administration etc.) but there are some which local authorities cannot fight against (e. g. greenhouse effect or degradation of ozone layer). Another problem is how to create national parks and reserves of nature without conflict with local communities. Among fundamental barriers in making real local ecological policy should be mentioned: limited financial means, practical difficulties in working out local eco-development strategies, limited authorizations of communities to form law regulations. In the paper some important directives were discussed which may help to overcome above listed barriers.When we talk about sustainable development we must notice the dissimilarity among geographical regions. Therefore it is impossible to create one, universal scheme of eco-development. Each region has its own specific features and local problems and because of that the strategies of eco-development must be formed for each region separately. In the paper a few programs of eco-development for different regions i n Poland were presented. It was also shown what the two terms "sustainable development" and "eco-development" mean. In the strict sense the meaning of both terms is not exactly the same although they are often being used interchangeably