The research focuses on the phenomenon of the foreign direct investment, and its impact on the economic growth through using the supply broad money M2 as an indicator to test the impact of changing in supply at the level of foreign investment in the Syrian economy. It has been necessary in the context of the country's direction towards economic openness and marked increase in the independence of the central bank and its growing ability to pursue monetary policy, and control the money supply , from study the impact of these monetary decisions and their impact and effectiveness in attracting investment or expelled it ,and their ability to create an environment attractive or repulsive for investments through the rationalization of economic decision.