This article proves that the efficiency of the economy depends on the optimal development of small, medium and large businesses. In the current conditions, investment is one of the main means of ensuring the necessary conditions for overcoming the economic crisis, structural changes in the national economy, accelerating the effective development of business. The important role of management in investment processes is defined. It is proved that attracting foreign capital plays an important role in the sustainable development of the economy of business structures and contributes to more efficient management of the national economy. The role of small and medium business in the development of the country���s economy is determined. The problems that hinder the development of business in the country are outlined. The dynamics, the structure of foreign direct investment in the economy of Lviv region, the trends of their change per capita, the structure by type of economic activity, as well as the geographical structure of direct investment in the business of Lviv region are studied. The impact of foreign direct investment on the sustainable economic development of the region and the feasibility of attracting foreign investment to achieve stable socio���economic development of the region. After conducting research, it was found that in recent years there has been a decrease in investment activity of foreign investors in the regional economy, as well as a reduction in foreign direct investment. The most attractive for foreign partners are industry and financial and insurance activities, transport.