With accession to the EU, Slovenia will simultaneously become a member of customs union, meaning that existing trade barriers with partner countries should be abolished and that trade policy against third countries should be adapted to the policy of the Union. Slovenia should cede up the instruments of common commercial policy. Practical importance for Slovenia will be caused by loss of national sovereignity in the field of anti-dumping measures as well as in concluding trade agreements what will have considerable effects on trade with countries in the area of farmer Yugoslavia. According to the results of the Uruguay round negotiations, most of quantitative restrictions in trade with textiles and clothing will be abolished on 1 January 2005. Slovenia has to be prepared to confront with such keen competition in this branch, especially due to the essentially higher share of employees and exports of this branch in the manufacturing activities of Slovenian industry and its higher regional concentration. Both the Slovenian government and Slovenian companies have to make adjustments to prepare for these changes in operating environment simoultaneously with the accomplishment of all necessary processes before accession to the EU internal market and to common policies of the European Union