In the first quarter of 2015, the economic growth of Indonesia increases at 4.7%. This is not good news because it is lower than the target. In fact, in 2014, Indonesia economic growth was above 5% in each quarter. Nevertheless, other countries also experience economic growth slowdown in first quarter of 2015. For Indonesia itself, there are many factors cause the slowdown of economic growth. This essay aims to describe two factors that cause slowdown of Indonesian economic growth.