Abdel-Fattah El-Sisi has arrived at the Ittihadiya presidential palace in Heliopolis for the second stage of his inauguration as president.
The former president, Adly Mansour, will hand over power to the new leader.
Both Mansour and El-Sisi will address the public during the ceremony.
El-Sisi earlier took the presidential oath of office at the Supreme Constitutional Court.
The ceremony at Ittihadiya will be attended by at least 45 Arab and international figures, Al-Ahram Arabic news website reported.
Among the guests are King Abdullah of Jordan, Crown Prince Salman Ibn Abdel-Aziz of Saudi Arabia, Crown Prince Mohamed Ibn Zayed of UAE, King Hamd of Bahrain as well the presidents of Chad, Eritrea and Equatorial Guinea.
The ceremony at Ittihadiya will be followed by another ceremony this evening at the Al-Quba presidential palace.