The session, presided over by Xi, was attended by 203 members of the 20th CPC Central Committee and 168 alternate members, Xinhua reported.
Xi was also named chairman of the CPC Central Military Commission at the session.
The members of the Standing Committee of the Political Bureau of the CPC Central Committee elected at the session are Xi Jinping, Li Qiang, Zhao Leji, Wang Huning, Cai Qi, Ding Xuexiang and Li Xi.
Also elected were members of the Political Bureau of the CPC Central Committee at the session, which endorsed the members of the CPC Central Committee Secretariat nominated by the Standing Committee of the Political Bureau of the CPC Central Committee.
The session named the members of the Central Military Commission.
The session approved the secretary, deputy secretaries and members of the Standing Committee of the Central Commission for Discipline Inspection (CCDI) elected at the first plenary session of the 20th CCDI.