The article deals with the issue concerning the place of the of sustainbale development
in the Polish Constitution. It will present the problem of sustainable development legal nature and its consequences. Obligations of public authorities regarding the implementation of sustainable development included in Article 5 of the Constitution, will also be considered with the background of the provisions contained in art. 74 section 1, 68 and 86 of the Constitution. The article will also contain references to contemporary understanding of sustainable development, which results from the acts of international law, including the Rio+20 Declaration and Agenda 2030. The aim of the above analysis is to indicate what shape it should be given today and how currently sustainable development should be understood. That should be the same an indication for public authorities what actions should be taken in order to respond the current understanding of sustainable development.