Mongolian foreign direct investment is governed by the “Constitution”, “Foreign Investment Law” and other laws as well as international treaties to which Mongolia is a party. Mongolian s foreign direct investment fell by 35.8% from 2010 to 2011, 43.52% from 2012 to 2013, and 27.3% from 2014 to 2018. In recent years, there has been a trend of focusing foreign direct investment in the mining industry. As the inflow of foreign direct investment declines and the outflow increases, the economy still faces a series of problems, including foreign debt, budget deficits, exchange rates, and unemployment. This highlights the need to pay attention to the current investment environment and investment attractiveness policies, as well as appropriate policies that are in Mongolia’s interests. For this reason, it is still necessary to determine the prospects of foreign direct investment in Mongolia, the concentration of foreign direct investment in the non-mining sector, the implementation of foreign direct investment policy and its impact on the economy. Therefore, the purpose is to study and improve Mongolia’s foreign direct investment policy.