疫情全球大流行、世界经济危机和中美贸易摩擦，引发了宏观经济思想与政策的大论战、大变革。我们应该如何战胜危机，走出衰退？ 新基建经济学应时代而生，成为危机应对和大国竞争的关键胜负手。从历史经验和现实实践来看，新基建是应对经济危机的更简单有效的办法，兼顾短期扩大有效需求和长期扩大有效供给，兼具稳增长、稳就业、调结构、促创新、惠民生的综合性重大作用。

The global pandemic of the epidemic, the world economic crisis and Sino-US trade frictions have triggered major debates and major changes in macroeconomic thinking and policies. How should we overcome the crisis and get out of recession? New infrastructure economics has emerged in response to the times, and has become a key winner in crisis response and competition between major powers. Judging from historical experience and actual practice, new infrastructure construction is a simpler and more effective way to deal with the economic crisis, taking into account short-term expansion of effective demand and long-term expansion of effective supply, and has both stable growth, stable employment, structural adjustment, promotion of innovation, and people's livelihood. Comprehensive and important role.