In the first hundred days of Donald Trump's presidency, he promoted multiple policies with high efficiency and a strong style, demonstrating his 'America First' governance philosophy. In terms of the economy, he signed executive orders to boost American manufacturing, initiated tax reduction plans, and relaxed corporate regulations, attempting to stimulate domestic demand and employment. At the same time, he strengthened border security, pushed for immigration restrictions, and advanced the construction of the U.S.-Mexico border wall, sparking heated discussions both domestically and internationally. In foreign affairs, Trump took a tough stance, re-evaluating trade agreements and foreign military deployments, altering America's traditional diplomatic strategy. While supporters believe his actions are decisive and reforms are clear, critics argue that his policies are too radical, leading to social divisions. His performance in the first hundred days is both controversial and marks the beginning of a completely new political style.