The activities on inauguration day started at 9 a.m., when the president and vice president were formally sworn into office inside the Presidential Building. President Chen then administered the oaths of office to Premier Yu Shyi-kun, Presidential Secretary-General Su Chen-chang, and National Security Council Secretary-General Chiou I-jen.
五二○大典於當天上午九時開始，首先在總統府內舉行總統、副總統宣誓就職典禮，接著陳總統為三長──行政院長游錫 $、總統府秘書長蘇貞昌，與國安會秘書長邱義仁監誓。