Investment policy is considered one of the most important foundations of economic development in the current era. With the economic and social changes and pressures that the world is witnessing and aiming to achieve economic growth, countries have had to increase investments and attract more domestic and foreign capital, for investment is generally part of the economy of nations and a fundamental pillar in its development. Therefore, Algeria, like other countries, has strengthened its investment position in the national economy and made it a priority, and this is through support and promotion of investment, whether under the planning system (1967-1989) or in the framework of reforms and the transition towards a market economy that it has embarked on since 1990 to Today, Algeria has paid great attention to investment policy, creating legal and legislative grounds to facilitate the investment process and protect investors. Oum El Bouaghi is one of the cities in which various investment policies have been applied across different periods. How was the result of these policies and what are their actual effects on the ground?.