In recent years, Mongolia has been facing an economic boom with annual rate of more than 10 percent, witnessed its highest growth rate of 17 percent in 2012. Its abundant natural resources have been attracting foreign investment and causing exchange rate of tugrug being very volatile and dependent on export of very few natural resources such as coal and copper. Mongolian tugrug was dramatically appreciated, reaching 1390MNT against US dollar, in 2012 the booming year. But during 2013, tugrug has been depreciating sharply as the export of coal has dropped substantially. Official exchange rate of tugrug against dollar has depreciated from 1392MNT to 1716MNT between January and October, 2013. Sometimes the dollar was scare in Mongolian currency market caused dollar demand was increasing. That‘s why the Central of Mongolia have supplied money into market to adjust in market in order to overcome economic bad situation. This my paper will be determined internal and external factors to affect in Mongolian volatile exchange rate in recent years, and to find new way to protect risk of uncertainly shock in market. According to the research main result, the external factor or commodity price influenced in Mongolian exchange rate, it was 47% percent of total factors. Thus, I suggested present value model which could be predict commodity price in future. In the result of predicting commodity price, I proofed that Chile exchange rate or Peso was able to forecast world commodity price. It was also proved another research.