Since the beginning of the campaign, Trump has always appeared in the face of the world in the face of “conservatism” in the economic field. He strongly criticized globalization and believed that this was the chief culprit of the large number of blue-collar classes in the United States. And threatened to reverse this situation. After successfully winning the White House, Trump also made a series of actions, and indeed practiced this proposition and commitment. Under his leadership, the United States set off a trend of counter-globalization, trade protection is prevalent, and there is a global economic order. Suffered a serious threat.