The author discusses EU regulations concerning biotechnology, a new technology which strongly influences the internal market. Primary regulations (the treaty), secondary (regulations, directives, decisions) and general principles of the Community Law are considered. The association agreement between Poland and the European Community (the European Agreement) is also taken into account. Directives Nos 90/219, 90/220 appear to play a key role in the field of biotechnology. The activities of the Member States (soon including Poland) are concentrated on making the national regulatory frameworks compatible with the EU directives concerning biotechnology.