>This report retrospect and analyses the world economy in the first half of the year and makes the conclusion that the World Economy have revived strongly，but take the no-overall and no-balanced character. According to the recent trend and the factors that impact on the economy，the world economy will slow down in the second half of the year. Under the background，macroeconomic policies are confronted with many challenges. At the end，it estimates the impact on china economy from the world economy and the macroeconomic policies taken by other countries.