The paper selected three macroeconomic issues closely followed by global think-tanks and academia in 2015，namely the risk of secular stagnation in advanced economies，China’s economic slowdown and transformation，lessons from the Greek debt crisis. The three issues reflected important developments in global macroeconomy. They bear great implications for the prospect of global macroeconomy as well as the policy responses from major economies. The paper introduces and discusses the main contents，key differences in opinions and policy implications of these issues respectively.