The first part of the thesis deals with a description of legal relationships in the international trade and explains the term "international element." Further there is a short description of private international law and international trade law. The second part of the thesis is focused on securing of contractual obligations in the international trade. The third part concerns with explanation of the basic forms of legal relationships in the international trade regulation with regard to securing of contractual obligations. The final part of the thesis deals with a description of securing instruments used in the international trade. At the end of this part there are listed factors which influence the choice of a suitable securing instrument.