It is necessary to pay special attention to economic legal issues due to the significant economic developments at the regional and international levels and the special attention of other countries to establish economic and trade relations with each other and to the huge volume of activities and control and guidance of their specialized forces and establishing and establishing trade-economic relations. The requirements of place and time and economic crises demand that the world today recognize the special economic needs that domestic forces must be aware of these rules and regulations, and address vulnerabilities and resolve their economic problems with other states. Legal inequalities of investments and their effects along with lack of public support in some cases. In many cases, the effects of private sector investment in the development of host countries and the effects of investment in supporting the public sectors of the host country have been overlooked. Limits the principle of independence of any country with special effects on the host country, severely the rights of the host country without advantage in foreign lands, has always been investment protection. The primary goal in international trade law of foreign investment, this article, while explaining the importance and specific requirements of the subject, examines the examples and their necessity and importance in the field of new international developments.