Publication is available only in electronic edition. The study was part of the research project: The Polish food sector in the initial years of EU membership ("Polski sektor żywnościowy w pierwszych latach członkostwa") within the framework of the task: Review of the condition of the Polish food economy sector after Poland's EU accession) ("Ocena stanu polskich gospodarki żywnościowej po wejściu Polski do UE"). The purpose of this study is to evaluate the condition of the Polish food economy sector in the fourth year after joining the European Union, and in particular the influence of this event on demand for products of agriculture and food industry, agricultural prices and food prices, production of agriculture and food industry, structural transformations of food industry, as well as on the economic situation of both sectors.