Theoretically, many researchers have found a positive relationship between foreign direct investment (FDI), and economic growth. In recent years, a number of economists have worked to empirically prove this result, studying several countries around the world.In this article, we have studied this relationship (FDI-economic growth), in the case of Tunisia during the period (1970-2015). We recalled the different empirical works that studied the impact of direct investment abroad on economic growth in the first section, then we analyzed the methodology of the work in the second section and finally we presented our interpret different results of the estimates. It has been found that FDI has had a significant and positive influence on Tunisian economic growth. We can also say that human capital is a determining factor in the process of attractiveness in Tunisia. Tunisia should therefore make a coherent trade-off between an attractiveness policy and an effective domestic policy which at the same time allows it to attract and benefit from the advantages of FDI.