The paper analyzes trade policy of the European union on the basis of the European Union's and the Republic of Croatia's foreign trade research. Trade is considered to be one of the drivers of economic growth and improvement because exports enable product placement increases and production in large quantities that lower production costs and imports allow them to buy abroad at much lower prices than to produce these products in their own plants. The task was to identify the trade policy in the European Union and the Republic of Croatia, which are their main trading partners and main product groups in export and import and finally export and import of the Republic of Croatia in the period from 2013 to 2017. Theoretical analysis has shown that the Republic of Croatia is slowly developing its trade policy and expanding the economy. Exports and imports grow, both in the European Union and in the Republic of Croatia. The results of the research analysis suggest that the European Union's exports are dominated by products from the Group of Machines and Transporting Equipment and Chemical Products, as well as the Republic of Croatia. The largest part of the EU imports are from the Group of Machines and Transportable and Mineral Fuels and Lubricants, while in Croatia only have Machinery and Transport. The largest exports and imports of the European Union were Germany and the United Kingdom, and Croatia and Italy were Germany. The main trading partners of the European Union are China and the USA, Russia and Switzerland, and in the Republic of Croatia are Italy, Germany, Slovenia and Bosnia and Herzegovina. In the period from 2013 to 2016, exports and imports have increased slowly but are being used in 2017 which has a major impact on the economy of the Republic of Croatia.