In 2018,the world GDP grew by around 3.7% measured at purchasing power parity(PPP)and 3.2% if measured using market exchange rate,growing steadily at the same pace as the previous year The world GDP growth rate rose rapidly from 3.3% in 2016 to 3.7% in 2017,with an increase of 0.4 percentage point.However,this trend of rapid increase in GDP growth rate failed to sustain in 2018.As the world economic growth is losing momentum,world economic growth is likely to shift further to the downside in the future.