Starting from April 5, 2025, the United States officially imposed new tariffs on imported goods, causing a shock to the global trade chain. From the impact on enterprise operating costs, to the reorganization of the international supply chain, and the increasing public concerns about inflation, the new U.S. tariff measures are profoundly affecting the global economic landscape. This article will analyze the latest developments from the perspectives of policy background, industry impact, global situation, and future outlook.